lustre/ptlrpc/pack_generic.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  19  *
  20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  21  * CA 95054 USA or visit www.sun.com if you need additional information or
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2011, 2013, Intel Corporation.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  *
  36  * lustre/ptlrpc/pack_generic.c
  37  *
  38  * (Un)packing of OST requests
  39  *
  40  * Author: Peter J. Braam <braam@clusterfs.com>
  41  * Author: Phil Schwan <phil@clusterfs.com>
  42  * Author: Eric Barton <eeb@clusterfs.com>
  43  */
  44
  45 #define DEBUG_SUBSYSTEM S_RPC
  46
  47 #include <libcfs/libcfs.h>
  48
  49 #include <obd_support.h>
  50 #include <obd_class.h>
  51 #include <lustre_net.h>
  52 #include <obd_cksum.h>
  53 #include <lustre/ll_fiemap.h>
  54
  55 static inline int lustre_msg_hdr_size_v2(int count)
  56 {
  57         return cfs_size_round(offsetof(struct lustre_msg_v2,
  58                                        lm_buflens[count]));
  59 }
  60
  61 int lustre_msg_hdr_size(__u32 magic, int count)
  62 {
  63         switch (magic) {
  64         case LUSTRE_MSG_MAGIC_V2:
  65                 return lustre_msg_hdr_size_v2(count);
  66         default:
  67                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
  68                 return -EINVAL;
  69         }
  70 }
  71 EXPORT_SYMBOL(lustre_msg_hdr_size);
  72
  73 void ptlrpc_buf_set_swabbed(struct ptlrpc_request *req, const int inout,
  74                             int index)
  75 {
  76         if (inout)
  77                 lustre_set_req_swabbed(req, index);
  78         else
  79                 lustre_set_rep_swabbed(req, index);
  80 }
  81 EXPORT_SYMBOL(ptlrpc_buf_set_swabbed);
  82
  83 int ptlrpc_buf_need_swab(struct ptlrpc_request *req, const int inout,
  84                          int index)
  85 {
  86         if (inout)
  87                 return (ptlrpc_req_need_swab(req) &&
  88                         !lustre_req_swabbed(req, index));
  89         else
  90                 return (ptlrpc_rep_need_swab(req) &&
  91                         !lustre_rep_swabbed(req, index));
  92 }
  93 EXPORT_SYMBOL(ptlrpc_buf_need_swab);
  94
  95 static inline int lustre_msg_check_version_v2(struct lustre_msg_v2 *msg,
  96                                               __u32 version)
  97 {
  98         __u32 ver = lustre_msg_get_version(msg);
  99         return (ver & LUSTRE_VERSION_MASK) != version;
 100 }
 101
 102 int lustre_msg_check_version(struct lustre_msg *msg, __u32 version)
 103 {
 104         switch (msg->lm_magic) {
 105         case LUSTRE_MSG_MAGIC_V1:
 106                 CERROR("msg v1 not supported - please upgrade you system\n");
 107                 return -EINVAL;
 108         case LUSTRE_MSG_MAGIC_V2:
 109                 return lustre_msg_check_version_v2(msg, version);
 110         default:
 111                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 112                 return 0;
 113         }
 114 }
 115 EXPORT_SYMBOL(lustre_msg_check_version);
 116
 117 /* early reply size */
 118 int lustre_msg_early_size()
 119 {
 120         static int size = 0;
 121         if (!size) {
 122                 /* Always reply old ptlrpc_body_v2 to keep interoprability
 123                  * with the old client (< 2.3) which doesn't have pb_jobid
 124                  * in the ptlrpc_body.
 125                  *
 126                  * XXX Remove this whenever we dorp interoprability with such
 127                  *     client.
 128                  */
 129                 __u32 pblen = sizeof(struct ptlrpc_body_v2);
 130                 size = lustre_msg_size(LUSTRE_MSG_MAGIC_V2, 1, &pblen);
 131         }
 132         return size;
 133 }
 134 EXPORT_SYMBOL(lustre_msg_early_size);
 135
 136 int lustre_msg_size_v2(int count, __u32 *lengths)
 137 {
 138         int size;
 139         int i;
 140
 141         size = lustre_msg_hdr_size_v2(count);
 142         for (i = 0; i < count; i++)
 143                 size += cfs_size_round(lengths[i]);
 144
 145         return size;
 146 }
 147 EXPORT_SYMBOL(lustre_msg_size_v2);
 148
 149 /* This returns the size of the buffer that is required to hold a lustre_msg
 150  * with the given sub-buffer lengths.
 151  * NOTE: this should only be used for NEW requests, and should always be
 152  *       in the form of a v2 request.  If this is a connection to a v1
 153  *       target then the first buffer will be stripped because the ptlrpc
 154  *       data is part of the lustre_msg_v1 header. b=14043 */
 155 int lustre_msg_size(__u32 magic, int count, __u32 *lens)
 156 {
 157         __u32 size[] = { sizeof(struct ptlrpc_body) };
 158
 159         if (!lens) {
 160                 LASSERT(count == 1);
 161                 lens = size;
 162         }
 163
 164         LASSERT(count > 0);
 165         LASSERT(lens[MSG_PTLRPC_BODY_OFF] >= sizeof(struct ptlrpc_body_v2));
 166
 167         switch (magic) {
 168         case LUSTRE_MSG_MAGIC_V2:
 169                 return lustre_msg_size_v2(count, lens);
 170         default:
 171                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
 172                 return -EINVAL;
 173         }
 174 }
 175 EXPORT_SYMBOL(lustre_msg_size);
 176
 177 /* This is used to determine the size of a buffer that was already packed
 178  * and will correctly handle the different message formats. */
 179 int lustre_packed_msg_size(struct lustre_msg *msg)
 180 {
 181         switch (msg->lm_magic) {
 182         case LUSTRE_MSG_MAGIC_V2:
 183                 return lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
 184         default:
 185                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 186                 return 0;
 187         }
 188 }
 189 EXPORT_SYMBOL(lustre_packed_msg_size);
 190
 191 void lustre_init_msg_v2(struct lustre_msg_v2 *msg, int count, __u32 *lens,
 192                         char **bufs)
 193 {
 194         char *ptr;
 195         int i;
 196
 197         msg->lm_bufcount = count;
 198         /* XXX: lm_secflvr uninitialized here */
 199         msg->lm_magic = LUSTRE_MSG_MAGIC_V2;
 200
 201         for (i = 0; i < count; i++)
 202                 msg->lm_buflens[i] = lens[i];
 203
 204         if (bufs == NULL)
 205                 return;
 206
 207         ptr = (char *)msg + lustre_msg_hdr_size_v2(count);
 208         for (i = 0; i < count; i++) {
 209                 char *tmp = bufs[i];
 210                 LOGL(tmp, lens[i], ptr);
 211         }
 212 }
 213 EXPORT_SYMBOL(lustre_init_msg_v2);
 214
 215 static int lustre_pack_request_v2(struct ptlrpc_request *req,
 216                                   int count, __u32 *lens, char **bufs)
 217 {
 218         int reqlen, rc;
 219
 220         reqlen = lustre_msg_size_v2(count, lens);
 221
 222         rc = sptlrpc_cli_alloc_reqbuf(req, reqlen);
 223         if (rc)
 224                 return rc;
 225
 226         req->rq_reqlen = reqlen;
 227
 228         lustre_init_msg_v2(req->rq_reqmsg, count, lens, bufs);
 229         lustre_msg_add_version(req->rq_reqmsg, PTLRPC_MSG_VERSION);
 230         return 0;
 231 }
 232
 233 int lustre_pack_request(struct ptlrpc_request *req, __u32 magic, int count,
 234                         __u32 *lens, char **bufs)
 235 {
 236         __u32 size[] = { sizeof(struct ptlrpc_body) };
 237
 238         if (!lens) {
 239                 LASSERT(count == 1);
 240                 lens = size;
 241         }
 242
 243         LASSERT(count > 0);
 244         LASSERT(lens[MSG_PTLRPC_BODY_OFF] == sizeof(struct ptlrpc_body));
 245
 246         /* only use new format, we don't need to be compatible with 1.4 */
 247         magic = LUSTRE_MSG_MAGIC_V2;
 248
 249         switch (magic) {
 250         case LUSTRE_MSG_MAGIC_V2:
 251                 return lustre_pack_request_v2(req, count, lens, bufs);
 252         default:
 253                 LASSERTF(0, "incorrect message magic: %08x\n", magic);
 254                 return -EINVAL;
 255         }
 256 }
 257 EXPORT_SYMBOL(lustre_pack_request);
 258
 259 #if RS_DEBUG
 260 struct list_head ptlrpc_rs_debug_lru =
 261         LIST_HEAD_INIT(ptlrpc_rs_debug_lru);
 262 spinlock_t ptlrpc_rs_debug_lock;
 263
 264 #define PTLRPC_RS_DEBUG_LRU_ADD(rs)                                     \
 265 do {                                                                    \
 266         spin_lock(&ptlrpc_rs_debug_lock);                               \
 267         list_add_tail(&(rs)->rs_debug_list, &ptlrpc_rs_debug_lru);      \
 268         spin_unlock(&ptlrpc_rs_debug_lock);                             \
 269 } while (0)
 270
 271 #define PTLRPC_RS_DEBUG_LRU_DEL(rs)                                     \
 272 do {                                                                    \
 273         spin_lock(&ptlrpc_rs_debug_lock);                               \
 274         list_del(&(rs)->rs_debug_list);                         \
 275         spin_unlock(&ptlrpc_rs_debug_lock);                             \
 276 } while (0)
 277 #else
 278 # define PTLRPC_RS_DEBUG_LRU_ADD(rs) do {} while(0)
 279 # define PTLRPC_RS_DEBUG_LRU_DEL(rs) do {} while(0)
 280 #endif
 281
 282 struct ptlrpc_reply_state *
 283 lustre_get_emerg_rs(struct ptlrpc_service_part *svcpt)
 284 {
 285         struct ptlrpc_reply_state *rs = NULL;
 286
 287         spin_lock(&svcpt->scp_rep_lock);
 288
 289         /* See if we have anything in a pool, and wait if nothing */
 290         while (list_empty(&svcpt->scp_rep_idle)) {
 291                 struct l_wait_info      lwi;
 292                 int                     rc;
 293
 294                 spin_unlock(&svcpt->scp_rep_lock);
 295                 /* If we cannot get anything for some long time, we better
 296                  * bail out instead of waiting infinitely */
 297                 lwi = LWI_TIMEOUT(cfs_time_seconds(10), NULL, NULL);
 298                 rc = l_wait_event(svcpt->scp_rep_waitq,
 299                                   !list_empty(&svcpt->scp_rep_idle), &lwi);
 300                 if (rc != 0)
 301                         goto out;
 302                 spin_lock(&svcpt->scp_rep_lock);
 303         }
 304
 305         rs = list_entry(svcpt->scp_rep_idle.next,
 306                             struct ptlrpc_reply_state, rs_list);
 307         list_del(&rs->rs_list);
 308
 309         spin_unlock(&svcpt->scp_rep_lock);
 310
 311         memset(rs, 0, svcpt->scp_service->srv_max_reply_size);
 312         rs->rs_size = svcpt->scp_service->srv_max_reply_size;
 313         rs->rs_svcpt = svcpt;
 314         rs->rs_prealloc = 1;
 315 out:
 316         return rs;
 317 }
 318
 319 void lustre_put_emerg_rs(struct ptlrpc_reply_state *rs)
 320 {
 321         struct ptlrpc_service_part *svcpt = rs->rs_svcpt;
 322
 323         spin_lock(&svcpt->scp_rep_lock);
 324         list_add(&rs->rs_list, &svcpt->scp_rep_idle);
 325         spin_unlock(&svcpt->scp_rep_lock);
 326         wake_up(&svcpt->scp_rep_waitq);
 327 }
 328
 329 int lustre_pack_reply_v2(struct ptlrpc_request *req, int count,
 330                          __u32 *lens, char **bufs, int flags)
 331 {
 332         struct ptlrpc_reply_state *rs;
 333         int                        msg_len, rc;
 334         ENTRY;
 335
 336         LASSERT(req->rq_reply_state == NULL);
 337
 338         if ((flags & LPRFL_EARLY_REPLY) == 0) {
 339                 spin_lock(&req->rq_lock);
 340                 req->rq_packed_final = 1;
 341                 spin_unlock(&req->rq_lock);
 342         }
 343
 344         msg_len = lustre_msg_size_v2(count, lens);
 345         rc = sptlrpc_svc_alloc_rs(req, msg_len);
 346         if (rc)
 347                 RETURN(rc);
 348
 349         rs = req->rq_reply_state;
 350         atomic_set(&rs->rs_refcount, 1);        /* 1 ref for rq_reply_state */
 351         rs->rs_cb_id.cbid_fn = reply_out_callback;
 352         rs->rs_cb_id.cbid_arg = rs;
 353         rs->rs_svcpt = req->rq_rqbd->rqbd_svcpt;
 354         INIT_LIST_HEAD(&rs->rs_exp_list);
 355         INIT_LIST_HEAD(&rs->rs_obd_list);
 356         INIT_LIST_HEAD(&rs->rs_list);
 357         spin_lock_init(&rs->rs_lock);
 358
 359         req->rq_replen = msg_len;
 360         req->rq_reply_state = rs;
 361         req->rq_repmsg = rs->rs_msg;
 362
 363         lustre_init_msg_v2(rs->rs_msg, count, lens, bufs);
 364         lustre_msg_add_version(rs->rs_msg, PTLRPC_MSG_VERSION);
 365
 366         PTLRPC_RS_DEBUG_LRU_ADD(rs);
 367
 368         RETURN(0);
 369 }
 370 EXPORT_SYMBOL(lustre_pack_reply_v2);
 371
 372 int lustre_pack_reply_flags(struct ptlrpc_request *req, int count, __u32 *lens,
 373                             char **bufs, int flags)
 374 {
 375         int rc = 0;
 376         __u32 size[] = { sizeof(struct ptlrpc_body) };
 377
 378         if (!lens) {
 379                 LASSERT(count == 1);
 380                 lens = size;
 381         }
 382
 383         LASSERT(count > 0);
 384         LASSERT(lens[MSG_PTLRPC_BODY_OFF] == sizeof(struct ptlrpc_body));
 385
 386         switch (req->rq_reqmsg->lm_magic) {
 387         case LUSTRE_MSG_MAGIC_V2:
 388                 rc = lustre_pack_reply_v2(req, count, lens, bufs, flags);
 389                 break;
 390         default:
 391                 LASSERTF(0, "incorrect message magic: %08x\n",
 392                          req->rq_reqmsg->lm_magic);
 393                 rc = -EINVAL;
 394         }
 395         if (rc != 0)
 396                 CERROR("lustre_pack_reply failed: rc=%d size=%d\n", rc,
 397                        lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens));
 398         return rc;
 399 }
 400 EXPORT_SYMBOL(lustre_pack_reply_flags);
 401
 402 int lustre_pack_reply(struct ptlrpc_request *req, int count, __u32 *lens,
 403                       char **bufs)
 404 {
 405         return lustre_pack_reply_flags(req, count, lens, bufs, 0);
 406 }
 407 EXPORT_SYMBOL(lustre_pack_reply);
 408
 409 void *lustre_msg_buf_v2(struct lustre_msg_v2 *m, int n, int min_size)
 410 {
 411         int i, offset, buflen, bufcount;
 412
 413         LASSERT(m != NULL);
 414         LASSERT(n >= 0);
 415
 416         bufcount = m->lm_bufcount;
 417         if (unlikely(n >= bufcount)) {
 418                 CDEBUG(D_INFO, "msg %p buffer[%d] not present (count %d)\n",
 419                        m, n, bufcount);
 420                 return NULL;
 421         }
 422
 423         buflen = m->lm_buflens[n];
 424         if (unlikely(buflen < min_size)) {
 425                 CERROR("msg %p buffer[%d] size %d too small "
 426                        "(required %d, opc=%d)\n", m, n, buflen, min_size,
 427                        n == MSG_PTLRPC_BODY_OFF ? -1 : lustre_msg_get_opc(m));
 428                 return NULL;
 429         }
 430
 431         offset = lustre_msg_hdr_size_v2(bufcount);
 432         for (i = 0; i < n; i++)
 433                 offset += cfs_size_round(m->lm_buflens[i]);
 434
 435         return (char *)m + offset;
 436 }
 437
 438 void *lustre_msg_buf(struct lustre_msg *m, int n, int min_size)
 439 {
 440         switch (m->lm_magic) {
 441         case LUSTRE_MSG_MAGIC_V2:
 442                 return lustre_msg_buf_v2(m, n, min_size);
 443         default:
 444                 LASSERTF(0, "incorrect message magic: %08x(msg:%p)\n", m->lm_magic, m);
 445                 return NULL;
 446         }
 447 }
 448 EXPORT_SYMBOL(lustre_msg_buf);
 449
 450 int lustre_shrink_msg_v2(struct lustre_msg_v2 *msg, int segment,
 451                          unsigned int newlen, int move_data)
 452 {
 453         char   *tail = NULL, *newpos;
 454         int     tail_len = 0, n;
 455
 456         LASSERT(msg);
 457         LASSERT(msg->lm_bufcount > segment);
 458         LASSERT(msg->lm_buflens[segment] >= newlen);
 459
 460         if (msg->lm_buflens[segment] == newlen)
 461                 goto out;
 462
 463         if (move_data && msg->lm_bufcount > segment + 1) {
 464                 tail = lustre_msg_buf_v2(msg, segment + 1, 0);
 465                 for (n = segment + 1; n < msg->lm_bufcount; n++)
 466                         tail_len += cfs_size_round(msg->lm_buflens[n]);
 467         }
 468
 469         msg->lm_buflens[segment] = newlen;
 470
 471         if (tail && tail_len) {
 472                 newpos = lustre_msg_buf_v2(msg, segment + 1, 0);
 473                 LASSERT(newpos <= tail);
 474                 if (newpos != tail)
 475                         memmove(newpos, tail, tail_len);
 476         }
 477 out:
 478         return lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
 479 }
 480
 481 /*
 482  * for @msg, shrink @segment to size @newlen. if @move_data is non-zero,
 483  * we also move data forward from @segment + 1.
 484  *
 485  * if @newlen == 0, we remove the segment completely, but we still keep the
 486  * totally bufcount the same to save possible data moving. this will leave a
 487  * unused segment with size 0 at the tail, but that's ok.
 488  *
 489  * return new msg size after shrinking.
 490  *
 491  * CAUTION:
 492  * + if any buffers higher than @segment has been filled in, must call shrink
 493  *   with non-zero @move_data.
 494  * + caller should NOT keep pointers to msg buffers which higher than @segment
 495  *   after call shrink.
 496  */
 497 int lustre_shrink_msg(struct lustre_msg *msg, int segment,
 498                       unsigned int newlen, int move_data)
 499 {
 500         switch (msg->lm_magic) {
 501         case LUSTRE_MSG_MAGIC_V2:
 502                 return lustre_shrink_msg_v2(msg, segment, newlen, move_data);
 503         default:
 504                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 505         }
 506 }
 507 EXPORT_SYMBOL(lustre_shrink_msg);
 508
 509 void lustre_free_reply_state(struct ptlrpc_reply_state *rs)
 510 {
 511         PTLRPC_RS_DEBUG_LRU_DEL(rs);
 512
 513         LASSERT(atomic_read(&rs->rs_refcount) == 0);
 514         LASSERT(!rs->rs_difficult || rs->rs_handled);
 515         LASSERT(!rs->rs_on_net);
 516         LASSERT(!rs->rs_scheduled);
 517         LASSERT(rs->rs_export == NULL);
 518         LASSERT(rs->rs_nlocks == 0);
 519         LASSERT(list_empty(&rs->rs_exp_list));
 520         LASSERT(list_empty(&rs->rs_obd_list));
 521
 522         sptlrpc_svc_free_rs(rs);
 523 }
 524 EXPORT_SYMBOL(lustre_free_reply_state);
 525
 526 static int lustre_unpack_msg_v2(struct lustre_msg_v2 *m, int len)
 527 {
 528         int swabbed, required_len, i;
 529
 530         /* Now we know the sender speaks my language. */
 531         required_len = lustre_msg_hdr_size_v2(0);
 532         if (len < required_len) {
 533                 /* can't even look inside the message */
 534                 CERROR("message length %d too small for lustre_msg\n", len);
 535                 return -EINVAL;
 536         }
 537
 538         swabbed = (m->lm_magic == LUSTRE_MSG_MAGIC_V2_SWABBED);
 539
 540         if (swabbed) {
 541                 __swab32s(&m->lm_magic);
 542                 __swab32s(&m->lm_bufcount);
 543                 __swab32s(&m->lm_secflvr);
 544                 __swab32s(&m->lm_repsize);
 545                 __swab32s(&m->lm_cksum);
 546                 __swab32s(&m->lm_flags);
 547                 CLASSERT(offsetof(typeof(*m), lm_padding_2) != 0);
 548                 CLASSERT(offsetof(typeof(*m), lm_padding_3) != 0);
 549         }
 550
 551         required_len = lustre_msg_hdr_size_v2(m->lm_bufcount);
 552         if (len < required_len) {
 553                 /* didn't receive all the buffer lengths */
 554                 CERROR ("message length %d too small for %d buflens\n",
 555                         len, m->lm_bufcount);
 556                 return -EINVAL;
 557         }
 558
 559         for (i = 0; i < m->lm_bufcount; i++) {
 560                 if (swabbed)
 561                         __swab32s(&m->lm_buflens[i]);
 562                 required_len += cfs_size_round(m->lm_buflens[i]);
 563         }
 564
 565         if (len < required_len) {
 566                 CERROR("len: %d, required_len %d\n", len, required_len);
 567                 CERROR("bufcount: %d\n", m->lm_bufcount);
 568                 for (i = 0; i < m->lm_bufcount; i++)
 569                         CERROR("buffer %d length %d\n", i, m->lm_buflens[i]);
 570                 return -EINVAL;
 571         }
 572
 573         return swabbed;
 574 }
 575
 576 int __lustre_unpack_msg(struct lustre_msg *m, int len)
 577 {
 578         int required_len, rc;
 579         ENTRY;
 580
 581         /* We can provide a slightly better error log, if we check the
 582          * message magic and version first.  In the future, struct
 583          * lustre_msg may grow, and we'd like to log a version mismatch,
 584          * rather than a short message.
 585          *
 586          */
 587         required_len = offsetof(struct lustre_msg, lm_magic) +
 588                        sizeof(m->lm_magic);
 589         if (len < required_len) {
 590                 /* can't even look inside the message */
 591                 CERROR("message length %d too small for magic/version check\n",
 592                        len);
 593                 RETURN(-EINVAL);
 594         }
 595
 596         rc = lustre_unpack_msg_v2(m, len);
 597
 598         RETURN(rc);
 599 }
 600 EXPORT_SYMBOL(__lustre_unpack_msg);
 601
 602 int ptlrpc_unpack_req_msg(struct ptlrpc_request *req, int len)
 603 {
 604         int rc;
 605         rc = __lustre_unpack_msg(req->rq_reqmsg, len);
 606         if (rc == 1) {
 607                 lustre_set_req_swabbed(req, MSG_PTLRPC_HEADER_OFF);
 608                 rc = 0;
 609         }
 610         return rc;
 611 }
 612 EXPORT_SYMBOL(ptlrpc_unpack_req_msg);
 613
 614 int ptlrpc_unpack_rep_msg(struct ptlrpc_request *req, int len)
 615 {
 616         int rc;
 617         rc = __lustre_unpack_msg(req->rq_repmsg, len);
 618         if (rc == 1) {
 619                 lustre_set_rep_swabbed(req, MSG_PTLRPC_HEADER_OFF);
 620                 rc = 0;
 621         }
 622         return rc;
 623 }
 624 EXPORT_SYMBOL(ptlrpc_unpack_rep_msg);
 625
 626 static inline int lustre_unpack_ptlrpc_body_v2(struct ptlrpc_request *req,
 627                                                const int inout, int offset)
 628 {
 629         struct ptlrpc_body *pb;
 630         struct lustre_msg_v2 *m = inout ? req->rq_reqmsg : req->rq_repmsg;
 631
 632         pb = lustre_msg_buf_v2(m, offset, sizeof(struct ptlrpc_body_v2));
 633         if (!pb) {
 634                 CERROR("error unpacking ptlrpc body\n");
 635                 return -EFAULT;
 636         }
 637         if (ptlrpc_buf_need_swab(req, inout, offset)) {
 638                 lustre_swab_ptlrpc_body(pb);
 639                 ptlrpc_buf_set_swabbed(req, inout, offset);
 640         }
 641
 642         if ((pb->pb_version & ~LUSTRE_VERSION_MASK) != PTLRPC_MSG_VERSION) {
 643                  CERROR("wrong lustre_msg version %08x\n", pb->pb_version);
 644                  return -EINVAL;
 645         }
 646
 647         if (!inout)
 648                 pb->pb_status = ptlrpc_status_ntoh(pb->pb_status);
 649
 650         return 0;
 651 }
 652
 653 int lustre_unpack_req_ptlrpc_body(struct ptlrpc_request *req, int offset)
 654 {
 655         switch (req->rq_reqmsg->lm_magic) {
 656         case LUSTRE_MSG_MAGIC_V2:
 657                 return lustre_unpack_ptlrpc_body_v2(req, 1, offset);
 658         default:
 659                 CERROR("bad lustre msg magic: %08x\n",
 660                        req->rq_reqmsg->lm_magic);
 661                 return -EINVAL;
 662         }
 663 }
 664
 665 int lustre_unpack_rep_ptlrpc_body(struct ptlrpc_request *req, int offset)
 666 {
 667         switch (req->rq_repmsg->lm_magic) {
 668         case LUSTRE_MSG_MAGIC_V2:
 669                 return lustre_unpack_ptlrpc_body_v2(req, 0, offset);
 670         default:
 671                 CERROR("bad lustre msg magic: %08x\n",
 672                        req->rq_repmsg->lm_magic);
 673                 return -EINVAL;
 674         }
 675 }
 676
 677 static inline int lustre_msg_buflen_v2(struct lustre_msg_v2 *m, int n)
 678 {
 679         if (n >= m->lm_bufcount)
 680                 return 0;
 681
 682         return m->lm_buflens[n];
 683 }
 684
 685 /**
 686  * lustre_msg_buflen - return the length of buffer \a n in message \a m
 687  * \param m lustre_msg (request or reply) to look at
 688  * \param n message index (base 0)
 689  *
 690  * returns zero for non-existent message indices
 691  */
 692 int lustre_msg_buflen(struct lustre_msg *m, int n)
 693 {
 694         switch (m->lm_magic) {
 695         case LUSTRE_MSG_MAGIC_V2:
 696                 return lustre_msg_buflen_v2(m, n);
 697         default:
 698                 CERROR("incorrect message magic: %08x\n", m->lm_magic);
 699                 return -EINVAL;
 700         }
 701 }
 702 EXPORT_SYMBOL(lustre_msg_buflen);
 703
 704 static inline void
 705 lustre_msg_set_buflen_v2(struct lustre_msg_v2 *m, int n, int len)
 706 {
 707         if (n >= m->lm_bufcount)
 708                 LBUG();
 709
 710         m->lm_buflens[n] = len;
 711 }
 712
 713 void lustre_msg_set_buflen(struct lustre_msg *m, int n, int len)
 714 {
 715         switch (m->lm_magic) {
 716         case LUSTRE_MSG_MAGIC_V2:
 717                 lustre_msg_set_buflen_v2(m, n, len);
 718                 return;
 719         default:
 720                 LASSERTF(0, "incorrect message magic: %08x\n", m->lm_magic);
 721         }
 722 }
 723
 724 EXPORT_SYMBOL(lustre_msg_set_buflen);
 725
 726 /* NB return the bufcount for lustre_msg_v2 format, so if message is packed
 727  * in V1 format, the result is one bigger. (add struct ptlrpc_body). */
 728 int lustre_msg_bufcount(struct lustre_msg *m)
 729 {
 730         switch (m->lm_magic) {
 731         case LUSTRE_MSG_MAGIC_V2:
 732                 return m->lm_bufcount;
 733         default:
 734                 CERROR("incorrect message magic: %08x\n", m->lm_magic);
 735                 return -EINVAL;
 736         }
 737 }
 738 EXPORT_SYMBOL(lustre_msg_bufcount);
 739
 740 char *lustre_msg_string(struct lustre_msg *m, int index, int max_len)
 741 {
 742         /* max_len == 0 means the string should fill the buffer */
 743         char *str;
 744         int slen, blen;
 745
 746         switch (m->lm_magic) {
 747         case LUSTRE_MSG_MAGIC_V2:
 748                 str = lustre_msg_buf_v2(m, index, 0);
 749                 blen = lustre_msg_buflen_v2(m, index);
 750                 break;
 751         default:
 752                 LASSERTF(0, "incorrect message magic: %08x\n", m->lm_magic);
 753         }
 754
 755         if (str == NULL) {
 756                 CERROR ("can't unpack string in msg %p buffer[%d]\n", m, index);
 757                 return NULL;
 758         }
 759
 760         slen = strnlen(str, blen);
 761
 762         if (slen == blen) {                     /* not NULL terminated */
 763                 CERROR("can't unpack non-NULL terminated string in "
 764                         "msg %p buffer[%d] len %d\n", m, index, blen);
 765                 return NULL;
 766         }
 767
 768         if (max_len == 0) {
 769                 if (slen != blen - 1) {
 770                         CERROR("can't unpack short string in msg %p "
 771                                "buffer[%d] len %d: strlen %d\n",
 772                                m, index, blen, slen);
 773                         return NULL;
 774                 }
 775         } else if (slen > max_len) {
 776                 CERROR("can't unpack oversized string in msg %p "
 777                        "buffer[%d] len %d strlen %d: max %d expected\n",
 778                        m, index, blen, slen, max_len);
 779                 return NULL;
 780         }
 781
 782         return str;
 783 }
 784 EXPORT_SYMBOL(lustre_msg_string);
 785
 786 /* Wrap up the normal fixed length cases */
 787 static inline void *__lustre_swab_buf(struct lustre_msg *msg, int index,
 788                                       int min_size, void *swabber)
 789 {
 790         void *ptr = NULL;
 791
 792         LASSERT(msg != NULL);
 793         switch (msg->lm_magic) {
 794         case LUSTRE_MSG_MAGIC_V2:
 795                 ptr = lustre_msg_buf_v2(msg, index, min_size);
 796                 break;
 797         default:
 798                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 799         }
 800
 801         if (ptr && swabber)
 802                 ((void (*)(void *))swabber)(ptr);
 803
 804         return ptr;
 805 }
 806
 807 static inline struct ptlrpc_body *lustre_msg_ptlrpc_body(struct lustre_msg *msg)
 808 {
 809         return lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
 810                                  sizeof(struct ptlrpc_body_v2));
 811 }
 812
 813 __u32 lustre_msghdr_get_flags(struct lustre_msg *msg)
 814 {
 815         switch (msg->lm_magic) {
 816         case LUSTRE_MSG_MAGIC_V1:
 817         case LUSTRE_MSG_MAGIC_V1_SWABBED:
 818                 return 0;
 819         case LUSTRE_MSG_MAGIC_V2:
 820                 /* already in host endian */
 821                 return msg->lm_flags;
 822         default:
 823                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 824                 return 0;
 825         }
 826 }
 827 EXPORT_SYMBOL(lustre_msghdr_get_flags);
 828
 829 void lustre_msghdr_set_flags(struct lustre_msg *msg, __u32 flags)
 830 {
 831         switch (msg->lm_magic) {
 832         case LUSTRE_MSG_MAGIC_V1:
 833                 return;
 834         case LUSTRE_MSG_MAGIC_V2:
 835                 msg->lm_flags = flags;
 836                 return;
 837         default:
 838                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 839         }
 840 }
 841
 842 __u32 lustre_msg_get_flags(struct lustre_msg *msg)
 843 {
 844         switch (msg->lm_magic) {
 845         case LUSTRE_MSG_MAGIC_V2: {
 846                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 847                 if (!pb) {
 848                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 849                         return 0;
 850                 }
 851                 return pb->pb_flags;
 852         }
 853         default:
 854                 /* flags might be printed in debug code while message
 855                  * uninitialized */
 856                 return 0;
 857         }
 858 }
 859 EXPORT_SYMBOL(lustre_msg_get_flags);
 860
 861 void lustre_msg_add_flags(struct lustre_msg *msg, int flags)
 862 {
 863         switch (msg->lm_magic) {
 864         case LUSTRE_MSG_MAGIC_V2: {
 865                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 866                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
 867                 pb->pb_flags |= flags;
 868                 return;
 869         }
 870         default:
 871                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 872         }
 873 }
 874 EXPORT_SYMBOL(lustre_msg_add_flags);
 875
 876 void lustre_msg_set_flags(struct lustre_msg *msg, int flags)
 877 {
 878         switch (msg->lm_magic) {
 879         case LUSTRE_MSG_MAGIC_V2: {
 880                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 881                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
 882                 pb->pb_flags = flags;
 883                 return;
 884         }
 885         default:
 886                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 887         }
 888 }
 889 EXPORT_SYMBOL(lustre_msg_set_flags);
 890
 891 void lustre_msg_clear_flags(struct lustre_msg *msg, int flags)
 892 {
 893         switch (msg->lm_magic) {
 894         case LUSTRE_MSG_MAGIC_V2: {
 895                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 896                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
 897                 pb->pb_flags &= ~(MSG_GEN_FLAG_MASK & flags);
 898                 return;
 899         }
 900         default:
 901                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 902         }
 903 }
 904 EXPORT_SYMBOL(lustre_msg_clear_flags);
 905
 906 __u32 lustre_msg_get_op_flags(struct lustre_msg *msg)
 907 {
 908         switch (msg->lm_magic) {
 909         case LUSTRE_MSG_MAGIC_V2: {
 910                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 911                 if (!pb) {
 912                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 913                         return 0;
 914                 }
 915                 return pb->pb_op_flags;
 916         }
 917         default:
 918                 return 0;
 919         }
 920 }
 921 EXPORT_SYMBOL(lustre_msg_get_op_flags);
 922
 923 void lustre_msg_add_op_flags(struct lustre_msg *msg, int flags)
 924 {
 925         switch (msg->lm_magic) {
 926         case LUSTRE_MSG_MAGIC_V2: {
 927                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 928                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
 929                 pb->pb_op_flags |= flags;
 930                 return;
 931         }
 932         default:
 933                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 934         }
 935 }
 936 EXPORT_SYMBOL(lustre_msg_add_op_flags);
 937
 938 void lustre_msg_set_op_flags(struct lustre_msg *msg, int flags)
 939 {
 940         switch (msg->lm_magic) {
 941         case LUSTRE_MSG_MAGIC_V2: {
 942                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 943                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
 944                 pb->pb_op_flags |= flags;
 945                 return;
 946         }
 947         default:
 948                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
 949         }
 950 }
 951 EXPORT_SYMBOL(lustre_msg_set_op_flags);
 952
 953 struct lustre_handle *lustre_msg_get_handle(struct lustre_msg *msg)
 954 {
 955         switch (msg->lm_magic) {
 956         case LUSTRE_MSG_MAGIC_V2: {
 957                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 958                 if (!pb) {
 959                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 960                         return NULL;
 961                 }
 962                 return &pb->pb_handle;
 963         }
 964         default:
 965                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 966                 return NULL;
 967         }
 968 }
 969 EXPORT_SYMBOL(lustre_msg_get_handle);
 970
 971 __u32 lustre_msg_get_type(struct lustre_msg *msg)
 972 {
 973         switch (msg->lm_magic) {
 974         case LUSTRE_MSG_MAGIC_V2: {
 975                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 976                 if (!pb) {
 977                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 978                         return PTL_RPC_MSG_ERR;
 979                 }
 980                 return pb->pb_type;
 981         }
 982         default:
 983                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
 984                 return PTL_RPC_MSG_ERR;
 985         }
 986 }
 987 EXPORT_SYMBOL(lustre_msg_get_type);
 988
 989 __u32 lustre_msg_get_version(struct lustre_msg *msg)
 990 {
 991         switch (msg->lm_magic) {
 992         case LUSTRE_MSG_MAGIC_V2: {
 993                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
 994                 if (!pb) {
 995                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
 996                         return 0;
 997                 }
 998                 return pb->pb_version;
 999         }
1000         default:
1001                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1002                 return 0;
1003         }
1004 }
1005 EXPORT_SYMBOL(lustre_msg_get_version);
1006
1007 void lustre_msg_add_version(struct lustre_msg *msg, int version)
1008 {
1009         switch (msg->lm_magic) {
1010         case LUSTRE_MSG_MAGIC_V2: {
1011                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1012                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1013                 pb->pb_version |= version;
1014                 return;
1015         }
1016         default:
1017                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1018         }
1019 }
1020 EXPORT_SYMBOL(lustre_msg_add_version);
1021
1022 __u32 lustre_msg_get_opc(struct lustre_msg *msg)
1023 {
1024         switch (msg->lm_magic) {
1025         case LUSTRE_MSG_MAGIC_V2: {
1026                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1027                 if (!pb) {
1028                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1029                         return 0;
1030                 }
1031                 return pb->pb_opc;
1032         }
1033         default:
1034                 CERROR("incorrect message magic: %08x(msg:%p)\n", msg->lm_magic, msg);
1035                 LBUG();
1036                 return 0;
1037         }
1038 }
1039 EXPORT_SYMBOL(lustre_msg_get_opc);
1040
1041 __u64 lustre_msg_get_last_xid(struct lustre_msg *msg)
1042 {
1043         switch (msg->lm_magic) {
1044         case LUSTRE_MSG_MAGIC_V2: {
1045                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1046                 if (!pb) {
1047                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1048                         return 0;
1049                 }
1050                 return pb->pb_last_xid;
1051         }
1052         default:
1053                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1054                 return 0;
1055         }
1056 }
1057 EXPORT_SYMBOL(lustre_msg_get_last_xid);
1058
1059 __u64 lustre_msg_get_last_committed(struct lustre_msg *msg)
1060 {
1061         switch (msg->lm_magic) {
1062         case LUSTRE_MSG_MAGIC_V2: {
1063                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1064                 if (!pb) {
1065                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1066                         return 0;
1067                 }
1068                 return pb->pb_last_committed;
1069         }
1070         default:
1071                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1072                 return 0;
1073         }
1074 }
1075 EXPORT_SYMBOL(lustre_msg_get_last_committed);
1076
1077 __u64 *lustre_msg_get_versions(struct lustre_msg *msg)
1078 {
1079         switch (msg->lm_magic) {
1080         case LUSTRE_MSG_MAGIC_V1:
1081                 return NULL;
1082         case LUSTRE_MSG_MAGIC_V2: {
1083                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1084                 if (!pb) {
1085                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1086                         return NULL;
1087                 }
1088                 return pb->pb_pre_versions;
1089         }
1090         default:
1091                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1092                 return NULL;
1093         }
1094 }
1095 EXPORT_SYMBOL(lustre_msg_get_versions);
1096
1097 __u64 lustre_msg_get_transno(struct lustre_msg *msg)
1098 {
1099         switch (msg->lm_magic) {
1100         case LUSTRE_MSG_MAGIC_V2: {
1101                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1102                 if (!pb) {
1103                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1104                         return 0;
1105                 }
1106                 return pb->pb_transno;
1107         }
1108         default:
1109                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1110                 return 0;
1111         }
1112 }
1113 EXPORT_SYMBOL(lustre_msg_get_transno);
1114
1115 int lustre_msg_get_status(struct lustre_msg *msg)
1116 {
1117         switch (msg->lm_magic) {
1118         case LUSTRE_MSG_MAGIC_V2: {
1119                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1120                 if (!pb) {
1121                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1122                         return -EINVAL;
1123                 }
1124                 return pb->pb_status;
1125         }
1126         default:
1127                 /* status might be printed in debug code while message
1128                  * uninitialized */
1129                 return -EINVAL;
1130         }
1131 }
1132 EXPORT_SYMBOL(lustre_msg_get_status);
1133
1134 __u64 lustre_msg_get_slv(struct lustre_msg *msg)
1135 {
1136         switch (msg->lm_magic) {
1137         case LUSTRE_MSG_MAGIC_V2: {
1138                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1139                 if (!pb) {
1140                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1141                         return -EINVAL;
1142                 }
1143                 return pb->pb_slv;
1144         }
1145         default:
1146                 CERROR("invalid msg magic %08x\n", msg->lm_magic);
1147                 return -EINVAL;
1148         }
1149 }
1150 EXPORT_SYMBOL(lustre_msg_get_slv);
1151
1152
1153 void lustre_msg_set_slv(struct lustre_msg *msg, __u64 slv)
1154 {
1155         switch (msg->lm_magic) {
1156         case LUSTRE_MSG_MAGIC_V2: {
1157                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1158                 if (!pb) {
1159                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1160                         return;
1161                 }
1162                 pb->pb_slv = slv;
1163                 return;
1164         }
1165         default:
1166                 CERROR("invalid msg magic %x\n", msg->lm_magic);
1167                 return;
1168         }
1169 }
1170 EXPORT_SYMBOL(lustre_msg_set_slv);
1171
1172 __u32 lustre_msg_get_limit(struct lustre_msg *msg)
1173 {
1174         switch (msg->lm_magic) {
1175         case LUSTRE_MSG_MAGIC_V2: {
1176                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1177                 if (!pb) {
1178                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1179                         return -EINVAL;
1180                 }
1181                 return pb->pb_limit;
1182         }
1183         default:
1184                 CERROR("invalid msg magic %x\n", msg->lm_magic);
1185                 return -EINVAL;
1186         }
1187 }
1188 EXPORT_SYMBOL(lustre_msg_get_limit);
1189
1190
1191 void lustre_msg_set_limit(struct lustre_msg *msg, __u64 limit)
1192 {
1193         switch (msg->lm_magic) {
1194         case LUSTRE_MSG_MAGIC_V2: {
1195                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1196                 if (!pb) {
1197                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1198                         return;
1199                 }
1200                 pb->pb_limit = limit;
1201                 return;
1202         }
1203         default:
1204                 CERROR("invalid msg magic %08x\n", msg->lm_magic);
1205                 return;
1206         }
1207 }
1208 EXPORT_SYMBOL(lustre_msg_set_limit);
1209
1210 __u32 lustre_msg_get_conn_cnt(struct lustre_msg *msg)
1211 {
1212         switch (msg->lm_magic) {
1213         case LUSTRE_MSG_MAGIC_V2: {
1214                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1215                 if (!pb) {
1216                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1217                         return 0;
1218                 }
1219                 return pb->pb_conn_cnt;
1220         }
1221         default:
1222                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1223                 return 0;
1224         }
1225 }
1226 EXPORT_SYMBOL(lustre_msg_get_conn_cnt);
1227
1228 int lustre_msg_is_v1(struct lustre_msg *msg)
1229 {
1230         switch (msg->lm_magic) {
1231         case LUSTRE_MSG_MAGIC_V1:
1232         case LUSTRE_MSG_MAGIC_V1_SWABBED:
1233                 return 1;
1234         default:
1235                 return 0;
1236         }
1237 }
1238 EXPORT_SYMBOL(lustre_msg_is_v1);
1239
1240 __u32 lustre_msg_get_magic(struct lustre_msg *msg)
1241 {
1242         switch (msg->lm_magic) {
1243         case LUSTRE_MSG_MAGIC_V2:
1244                 return msg->lm_magic;
1245         default:
1246                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1247                 return 0;
1248         }
1249 }
1250 EXPORT_SYMBOL(lustre_msg_get_magic);
1251
1252 __u32 lustre_msg_get_timeout(struct lustre_msg *msg)
1253 {
1254         switch (msg->lm_magic) {
1255         case LUSTRE_MSG_MAGIC_V1:
1256         case LUSTRE_MSG_MAGIC_V1_SWABBED:
1257                 return 0;
1258         case LUSTRE_MSG_MAGIC_V2: {
1259                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1260                 if (!pb) {
1261                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1262                         return 0;
1263
1264                 }
1265                 return pb->pb_timeout;
1266         }
1267         default:
1268                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1269                 return 0;
1270         }
1271 }
1272
1273 __u32 lustre_msg_get_service_time(struct lustre_msg *msg)
1274 {
1275         switch (msg->lm_magic) {
1276         case LUSTRE_MSG_MAGIC_V1:
1277         case LUSTRE_MSG_MAGIC_V1_SWABBED:
1278                 return 0;
1279         case LUSTRE_MSG_MAGIC_V2: {
1280                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1281                 if (!pb) {
1282                         CERROR("invalid msg %p: no ptlrpc body!\n", msg);
1283                         return 0;
1284
1285                 }
1286                 return pb->pb_service_time;
1287         }
1288         default:
1289                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1290                 return 0;
1291         }
1292 }
1293
1294 char *lustre_msg_get_jobid(struct lustre_msg *msg)
1295 {
1296         switch (msg->lm_magic) {
1297         case LUSTRE_MSG_MAGIC_V1:
1298         case LUSTRE_MSG_MAGIC_V1_SWABBED:
1299                 return NULL;
1300         case LUSTRE_MSG_MAGIC_V2: {
1301                 struct ptlrpc_body *pb =
1302                         lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1303                                           sizeof(struct ptlrpc_body));
1304                 if (!pb)
1305                         return NULL;
1306
1307                 return pb->pb_jobid;
1308         }
1309         default:
1310                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1311                 return NULL;
1312         }
1313 }
1314 EXPORT_SYMBOL(lustre_msg_get_jobid);
1315
1316 __u32 lustre_msg_get_cksum(struct lustre_msg *msg)
1317 {
1318         switch (msg->lm_magic) {
1319         case LUSTRE_MSG_MAGIC_V2:
1320                 return msg->lm_cksum;
1321         default:
1322                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1323                 return 0;
1324         }
1325 }
1326
1327 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 7, 53, 0)
1328 /*
1329  * In 1.6 and 1.8 the checksum was computed only on struct ptlrpc_body as
1330  * it was in 1.6 (88 bytes, smaller than the full size in 1.8).  It makes
1331  * more sense to compute the checksum on the full ptlrpc_body, regardless
1332  * of what size it is, but in order to keep interoperability with 1.8 we
1333  * can optionally also checksum only the first 88 bytes (caller decides). */
1334 # define ptlrpc_body_cksum_size_compat18         88
1335
1336 __u32 lustre_msg_calc_cksum(struct lustre_msg *msg, int compat18)
1337 #else
1338 __u32 lustre_msg_calc_cksum(struct lustre_msg *msg)
1339 #endif
1340 {
1341         switch (msg->lm_magic) {
1342         case LUSTRE_MSG_MAGIC_V2: {
1343                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1344 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 7, 53, 0)
1345                 __u32 len = compat18 ? ptlrpc_body_cksum_size_compat18 :
1346                             lustre_msg_buflen(msg, MSG_PTLRPC_BODY_OFF);
1347 #else
1348                 __u32 len = lustre_msg_buflen(msg, MSG_PTLRPC_BODY_OFF);
1349 #endif
1350                 unsigned int hsize = 4;
1351                 __u32 crc;
1352
1353                 LASSERTF(pb != NULL, "invalid msg %p: no ptlrpc body!\n", msg);
1354                 cfs_crypto_hash_digest(CFS_HASH_ALG_CRC32, (unsigned char *)pb,
1355                                        len, NULL, 0, (unsigned char *)&crc,
1356                                        &hsize);
1357                 return crc;
1358         }
1359         default:
1360                 CERROR("incorrect message magic: %08x\n", msg->lm_magic);
1361                 return 0;
1362         }
1363 }
1364
1365 void lustre_msg_set_handle(struct lustre_msg *msg, struct lustre_handle *handle)
1366 {
1367         switch (msg->lm_magic) {
1368         case LUSTRE_MSG_MAGIC_V2: {
1369                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1370                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1371                 pb->pb_handle = *handle;
1372                 return;
1373         }
1374         default:
1375                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1376         }
1377 }
1378 EXPORT_SYMBOL(lustre_msg_set_handle);
1379
1380 void lustre_msg_set_type(struct lustre_msg *msg, __u32 type)
1381 {
1382         switch (msg->lm_magic) {
1383         case LUSTRE_MSG_MAGIC_V2: {
1384                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1385                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1386                 pb->pb_type = type;
1387                 return;
1388         }
1389         default:
1390                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1391         }
1392 }
1393 EXPORT_SYMBOL(lustre_msg_set_type);
1394
1395 void lustre_msg_set_opc(struct lustre_msg *msg, __u32 opc)
1396 {
1397         switch (msg->lm_magic) {
1398         case LUSTRE_MSG_MAGIC_V2: {
1399                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1400                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1401                 pb->pb_opc = opc;
1402                 return;
1403         }
1404         default:
1405                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1406         }
1407 }
1408 EXPORT_SYMBOL(lustre_msg_set_opc);
1409
1410 void lustre_msg_set_last_xid(struct lustre_msg *msg, __u64 last_xid)
1411 {
1412         switch (msg->lm_magic) {
1413         case LUSTRE_MSG_MAGIC_V2: {
1414                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1415                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1416                 pb->pb_last_xid = last_xid;
1417                 return;
1418         }
1419         default:
1420                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1421         }
1422 }
1423 EXPORT_SYMBOL(lustre_msg_set_last_xid);
1424
1425 void lustre_msg_set_last_committed(struct lustre_msg *msg, __u64 last_committed)
1426 {
1427         switch (msg->lm_magic) {
1428         case LUSTRE_MSG_MAGIC_V2: {
1429                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1430                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1431                 pb->pb_last_committed = last_committed;
1432                 return;
1433         }
1434         default:
1435                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1436         }
1437 }
1438 EXPORT_SYMBOL(lustre_msg_set_last_committed);
1439
1440 void lustre_msg_set_versions(struct lustre_msg *msg, __u64 *versions)
1441 {
1442         switch (msg->lm_magic) {
1443         case LUSTRE_MSG_MAGIC_V1:
1444                 return;
1445         case LUSTRE_MSG_MAGIC_V2: {
1446                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1447                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1448                 pb->pb_pre_versions[0] = versions[0];
1449                 pb->pb_pre_versions[1] = versions[1];
1450                 pb->pb_pre_versions[2] = versions[2];
1451                 pb->pb_pre_versions[3] = versions[3];
1452                 return;
1453         }
1454         default:
1455                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1456         }
1457 }
1458 EXPORT_SYMBOL(lustre_msg_set_versions);
1459
1460 void lustre_msg_set_transno(struct lustre_msg *msg, __u64 transno)
1461 {
1462         switch (msg->lm_magic) {
1463         case LUSTRE_MSG_MAGIC_V2: {
1464                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1465                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1466                 pb->pb_transno = transno;
1467                 return;
1468         }
1469         default:
1470                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1471         }
1472 }
1473 EXPORT_SYMBOL(lustre_msg_set_transno);
1474
1475 void lustre_msg_set_status(struct lustre_msg *msg, __u32 status)
1476 {
1477         switch (msg->lm_magic) {
1478         case LUSTRE_MSG_MAGIC_V2: {
1479                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1480                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1481                 pb->pb_status = status;
1482                 return;
1483         }
1484         default:
1485                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1486         }
1487 }
1488 EXPORT_SYMBOL(lustre_msg_set_status);
1489
1490 void lustre_msg_set_conn_cnt(struct lustre_msg *msg, __u32 conn_cnt)
1491 {
1492         switch (msg->lm_magic) {
1493         case LUSTRE_MSG_MAGIC_V2: {
1494                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1495                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1496                 pb->pb_conn_cnt = conn_cnt;
1497                 return;
1498         }
1499         default:
1500                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1501         }
1502 }
1503 EXPORT_SYMBOL(lustre_msg_set_conn_cnt);
1504
1505 void lustre_msg_set_timeout(struct lustre_msg *msg, __u32 timeout)
1506 {
1507         switch (msg->lm_magic) {
1508         case LUSTRE_MSG_MAGIC_V1:
1509                 return;
1510         case LUSTRE_MSG_MAGIC_V2: {
1511                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1512                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1513                 pb->pb_timeout = timeout;
1514                 return;
1515         }
1516         default:
1517                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1518         }
1519 }
1520
1521 void lustre_msg_set_service_time(struct lustre_msg *msg, __u32 service_time)
1522 {
1523         switch (msg->lm_magic) {
1524         case LUSTRE_MSG_MAGIC_V1:
1525                 return;
1526         case LUSTRE_MSG_MAGIC_V2: {
1527                 struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg);
1528                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1529                 pb->pb_service_time = service_time;
1530                 return;
1531         }
1532         default:
1533                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1534         }
1535 }
1536
1537 void lustre_msg_set_jobid(struct lustre_msg *msg, char *jobid)
1538 {
1539         switch (msg->lm_magic) {
1540         case LUSTRE_MSG_MAGIC_V1:
1541                 return;
1542         case LUSTRE_MSG_MAGIC_V2: {
1543                 __u32 opc = lustre_msg_get_opc(msg);
1544                 struct ptlrpc_body *pb;
1545
1546                 /* Don't set jobid for ldlm ast RPCs, they've been shrinked.
1547                  * See the comment in ptlrpc_request_pack(). */
1548                 if (!opc || opc == LDLM_BL_CALLBACK ||
1549                     opc == LDLM_CP_CALLBACK || opc == LDLM_GL_CALLBACK)
1550                         return;
1551
1552                 pb = lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF,
1553                                        sizeof(struct ptlrpc_body));
1554                 LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg);
1555
1556                 if (jobid != NULL)
1557                         memcpy(pb->pb_jobid, jobid, JOBSTATS_JOBID_SIZE);
1558                 else if (pb->pb_jobid[0] == '\0')
1559                         lustre_get_jobid(pb->pb_jobid);
1560                 return;
1561         }
1562         default:
1563                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1564         }
1565 }
1566 EXPORT_SYMBOL(lustre_msg_set_jobid);
1567
1568 void lustre_msg_set_cksum(struct lustre_msg *msg, __u32 cksum)
1569 {
1570         switch (msg->lm_magic) {
1571         case LUSTRE_MSG_MAGIC_V1:
1572                 return;
1573         case LUSTRE_MSG_MAGIC_V2:
1574                 msg->lm_cksum = cksum;
1575                 return;
1576         default:
1577                 LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic);
1578         }
1579 }
1580
1581
1582 void ptlrpc_request_set_replen(struct ptlrpc_request *req)
1583 {
1584         int count = req_capsule_filled_sizes(&req->rq_pill, RCL_SERVER);
1585
1586         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count,
1587                                          req->rq_pill.rc_area[RCL_SERVER]);
1588         if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
1589                 req->rq_reqmsg->lm_repsize = req->rq_replen;
1590 }
1591 EXPORT_SYMBOL(ptlrpc_request_set_replen);
1592
1593 void ptlrpc_req_set_repsize(struct ptlrpc_request *req, int count, __u32 *lens)
1594 {
1595         req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens);
1596         if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
1597                 req->rq_reqmsg->lm_repsize = req->rq_replen;
1598 }
1599 EXPORT_SYMBOL(ptlrpc_req_set_repsize);
1600
1601 /**
1602  * Send a remote set_info_async.
1603  *
1604  * This may go from client to server or server to client.
1605  */
1606 int do_set_info_async(struct obd_import *imp,
1607                       int opcode, int version,
1608                       obd_count keylen, void *key,
1609                       obd_count vallen, void *val,
1610                       struct ptlrpc_request_set *set)
1611 {
1612         struct ptlrpc_request *req;
1613         char                  *tmp;
1614         int                    rc;
1615         ENTRY;
1616
1617         req = ptlrpc_request_alloc(imp, &RQF_OBD_SET_INFO);
1618         if (req == NULL)
1619                 RETURN(-ENOMEM);
1620
1621         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
1622                              RCL_CLIENT, keylen);
1623         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL,
1624                              RCL_CLIENT, vallen);
1625         rc = ptlrpc_request_pack(req, version, opcode);
1626         if (rc) {
1627                 ptlrpc_request_free(req);
1628                 RETURN(rc);
1629         }
1630
1631         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
1632         memcpy(tmp, key, keylen);
1633         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_VAL);
1634         memcpy(tmp, val, vallen);
1635
1636         ptlrpc_request_set_replen(req);
1637
1638         if (set) {
1639                 ptlrpc_set_add_req(set, req);
1640                 ptlrpc_check_set(NULL, set);
1641         } else {
1642                 rc = ptlrpc_queue_wait(req);
1643                 ptlrpc_req_finished(req);
1644         }
1645
1646         RETURN(rc);
1647 }
1648 EXPORT_SYMBOL(do_set_info_async);
1649
1650 /* byte flipping routines for all wire types declared in
1651  * lustre_idl.h implemented here.
1652  */
1653 void lustre_swab_ptlrpc_body(struct ptlrpc_body *b)
1654 {
1655         __swab32s (&b->pb_type);
1656         __swab32s (&b->pb_version);
1657         __swab32s (&b->pb_opc);
1658         __swab32s (&b->pb_status);
1659         __swab64s (&b->pb_last_xid);
1660         __swab64s (&b->pb_last_seen);
1661         __swab64s (&b->pb_last_committed);
1662         __swab64s (&b->pb_transno);
1663         __swab32s (&b->pb_flags);
1664         __swab32s (&b->pb_op_flags);
1665         __swab32s (&b->pb_conn_cnt);
1666         __swab32s (&b->pb_timeout);
1667         __swab32s (&b->pb_service_time);
1668         __swab32s (&b->pb_limit);
1669         __swab64s (&b->pb_slv);
1670         __swab64s (&b->pb_pre_versions[0]);
1671         __swab64s (&b->pb_pre_versions[1]);
1672         __swab64s (&b->pb_pre_versions[2]);
1673         __swab64s (&b->pb_pre_versions[3]);
1674         CLASSERT(offsetof(typeof(*b), pb_padding) != 0);
1675         /* While we need to maintain compatibility between
1676          * clients and servers without ptlrpc_body_v2 (< 2.3)
1677          * do not swab any fields beyond pb_jobid, as we are
1678          * using this swab function for both ptlrpc_body
1679          * and ptlrpc_body_v2. */
1680         CLASSERT(offsetof(typeof(*b), pb_jobid) != 0);
1681 }
1682 EXPORT_SYMBOL(lustre_swab_ptlrpc_body);
1683
1684 void lustre_swab_connect(struct obd_connect_data *ocd)
1685 {
1686         __swab64s(&ocd->ocd_connect_flags);
1687         __swab32s(&ocd->ocd_version);
1688         __swab32s(&ocd->ocd_grant);
1689         __swab64s(&ocd->ocd_ibits_known);
1690         __swab32s(&ocd->ocd_index);
1691         __swab32s(&ocd->ocd_brw_size);
1692         /* ocd_blocksize and ocd_inodespace don't need to be swabbed because
1693          * they are 8-byte values */
1694         __swab16s(&ocd->ocd_grant_extent);
1695         __swab32s(&ocd->ocd_unused);
1696         __swab64s(&ocd->ocd_transno);
1697         __swab32s(&ocd->ocd_group);
1698         __swab32s(&ocd->ocd_cksum_types);
1699         __swab32s(&ocd->ocd_instance);
1700         /* Fields after ocd_cksum_types are only accessible by the receiver
1701          * if the corresponding flag in ocd_connect_flags is set. Accessing
1702          * any field after ocd_maxbytes on the receiver without a valid flag
1703          * may result in out-of-bound memory access and kernel oops. */
1704         if (ocd->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)
1705                 __swab32s(&ocd->ocd_max_easize);
1706         if (ocd->ocd_connect_flags & OBD_CONNECT_MAXBYTES)
1707                 __swab64s(&ocd->ocd_maxbytes);
1708         CLASSERT(offsetof(typeof(*ocd), padding1) != 0);
1709         CLASSERT(offsetof(typeof(*ocd), padding2) != 0);
1710         CLASSERT(offsetof(typeof(*ocd), padding3) != 0);
1711         CLASSERT(offsetof(typeof(*ocd), padding4) != 0);
1712         CLASSERT(offsetof(typeof(*ocd), padding5) != 0);
1713         CLASSERT(offsetof(typeof(*ocd), padding6) != 0);
1714         CLASSERT(offsetof(typeof(*ocd), padding7) != 0);
1715         CLASSERT(offsetof(typeof(*ocd), padding8) != 0);
1716         CLASSERT(offsetof(typeof(*ocd), padding9) != 0);
1717         CLASSERT(offsetof(typeof(*ocd), paddingA) != 0);
1718         CLASSERT(offsetof(typeof(*ocd), paddingB) != 0);
1719         CLASSERT(offsetof(typeof(*ocd), paddingC) != 0);
1720         CLASSERT(offsetof(typeof(*ocd), paddingD) != 0);
1721         CLASSERT(offsetof(typeof(*ocd), paddingE) != 0);
1722         CLASSERT(offsetof(typeof(*ocd), paddingF) != 0);
1723 }
1724
1725 void lustre_swab_obdo (struct obdo  *o)
1726 {
1727         __swab64s (&o->o_valid);
1728         lustre_swab_ost_id(&o->o_oi);
1729         __swab64s (&o->o_parent_seq);
1730         __swab64s (&o->o_size);
1731         __swab64s (&o->o_mtime);
1732         __swab64s (&o->o_atime);
1733         __swab64s (&o->o_ctime);
1734         __swab64s (&o->o_blocks);
1735         __swab64s (&o->o_grant);
1736         __swab32s (&o->o_blksize);
1737         __swab32s (&o->o_mode);
1738         __swab32s (&o->o_uid);
1739         __swab32s (&o->o_gid);
1740         __swab32s (&o->o_flags);
1741         __swab32s (&o->o_nlink);
1742         __swab32s (&o->o_parent_oid);
1743         __swab32s (&o->o_misc);
1744         __swab64s (&o->o_ioepoch);
1745         __swab32s (&o->o_stripe_idx);
1746         __swab32s (&o->o_parent_ver);
1747         /* o_handle is opaque */
1748         /* o_lcookie is swabbed elsewhere */
1749         __swab32s (&o->o_uid_h);
1750         __swab32s (&o->o_gid_h);
1751         __swab64s (&o->o_data_version);
1752         CLASSERT(offsetof(typeof(*o), o_padding_4) != 0);
1753         CLASSERT(offsetof(typeof(*o), o_padding_5) != 0);
1754         CLASSERT(offsetof(typeof(*o), o_padding_6) != 0);
1755
1756 }
1757 EXPORT_SYMBOL(lustre_swab_obdo);
1758
1759 void lustre_swab_obd_statfs (struct obd_statfs *os)
1760 {
1761         __swab64s (&os->os_type);
1762         __swab64s (&os->os_blocks);
1763         __swab64s (&os->os_bfree);
1764         __swab64s (&os->os_bavail);
1765         __swab64s (&os->os_files);
1766         __swab64s (&os->os_ffree);
1767         /* no need to swab os_fsid */
1768         __swab32s (&os->os_bsize);
1769         __swab32s (&os->os_namelen);
1770         __swab64s (&os->os_maxbytes);
1771         __swab32s (&os->os_state);
1772         CLASSERT(offsetof(typeof(*os), os_fprecreated) != 0);
1773         CLASSERT(offsetof(typeof(*os), os_spare2) != 0);
1774         CLASSERT(offsetof(typeof(*os), os_spare3) != 0);
1775         CLASSERT(offsetof(typeof(*os), os_spare4) != 0);
1776         CLASSERT(offsetof(typeof(*os), os_spare5) != 0);
1777         CLASSERT(offsetof(typeof(*os), os_spare6) != 0);
1778         CLASSERT(offsetof(typeof(*os), os_spare7) != 0);
1779         CLASSERT(offsetof(typeof(*os), os_spare8) != 0);
1780         CLASSERT(offsetof(typeof(*os), os_spare9) != 0);
1781 }
1782 EXPORT_SYMBOL(lustre_swab_obd_statfs);
1783
1784 void lustre_swab_obd_ioobj(struct obd_ioobj *ioo)
1785 {
1786         lustre_swab_ost_id(&ioo->ioo_oid);
1787         __swab32s(&ioo->ioo_max_brw);
1788         __swab32s(&ioo->ioo_bufcnt);
1789 }
1790 EXPORT_SYMBOL(lustre_swab_obd_ioobj);
1791
1792 void lustre_swab_niobuf_remote(struct niobuf_remote *nbr)
1793 {
1794         __swab64s(&nbr->rnb_offset);
1795         __swab32s(&nbr->rnb_len);
1796         __swab32s(&nbr->rnb_flags);
1797 }
1798 EXPORT_SYMBOL(lustre_swab_niobuf_remote);
1799
1800 void lustre_swab_ost_body (struct ost_body *b)
1801 {
1802         lustre_swab_obdo (&b->oa);
1803 }
1804 EXPORT_SYMBOL(lustre_swab_ost_body);
1805
1806 void lustre_swab_ost_last_id(obd_id *id)
1807 {
1808         __swab64s(id);
1809 }
1810 EXPORT_SYMBOL(lustre_swab_ost_last_id);
1811
1812 void lustre_swab_generic_32s(__u32 *val)
1813 {
1814         __swab32s(val);
1815 }
1816 EXPORT_SYMBOL(lustre_swab_generic_32s);
1817
1818 void lustre_swab_gl_desc(union ldlm_gl_desc *desc)
1819 {
1820         lustre_swab_lu_fid(&desc->lquota_desc.gl_id.qid_fid);
1821         __swab64s(&desc->lquota_desc.gl_flags);
1822         __swab64s(&desc->lquota_desc.gl_ver);
1823         __swab64s(&desc->lquota_desc.gl_hardlimit);
1824         __swab64s(&desc->lquota_desc.gl_softlimit);
1825         __swab64s(&desc->lquota_desc.gl_time);
1826         CLASSERT(offsetof(typeof(desc->lquota_desc), gl_pad2) != 0);
1827 }
1828
1829 void lustre_swab_ost_lvb_v1(struct ost_lvb_v1 *lvb)
1830 {
1831         __swab64s(&lvb->lvb_size);
1832         __swab64s(&lvb->lvb_mtime);
1833         __swab64s(&lvb->lvb_atime);
1834         __swab64s(&lvb->lvb_ctime);
1835         __swab64s(&lvb->lvb_blocks);
1836 }
1837 EXPORT_SYMBOL(lustre_swab_ost_lvb_v1);
1838
1839 void lustre_swab_ost_lvb(struct ost_lvb *lvb)
1840 {
1841         __swab64s(&lvb->lvb_size);
1842         __swab64s(&lvb->lvb_mtime);
1843         __swab64s(&lvb->lvb_atime);
1844         __swab64s(&lvb->lvb_ctime);
1845         __swab64s(&lvb->lvb_blocks);
1846         __swab32s(&lvb->lvb_mtime_ns);
1847         __swab32s(&lvb->lvb_atime_ns);
1848         __swab32s(&lvb->lvb_ctime_ns);
1849         __swab32s(&lvb->lvb_padding);
1850 }
1851 EXPORT_SYMBOL(lustre_swab_ost_lvb);
1852
1853 void lustre_swab_lquota_lvb(struct lquota_lvb *lvb)
1854 {
1855         __swab64s(&lvb->lvb_flags);
1856         __swab64s(&lvb->lvb_id_may_rel);
1857         __swab64s(&lvb->lvb_id_rel);
1858         __swab64s(&lvb->lvb_id_qunit);
1859         __swab64s(&lvb->lvb_pad1);
1860 }
1861 EXPORT_SYMBOL(lustre_swab_lquota_lvb);
1862
1863 void lustre_swab_mdt_body (struct mdt_body *b)
1864 {
1865         lustre_swab_lu_fid(&b->mbo_fid1);
1866         lustre_swab_lu_fid(&b->mbo_fid2);
1867         /* handle is opaque */
1868         __swab64s(&b->mbo_valid);
1869         __swab64s(&b->mbo_size);
1870         __swab64s(&b->mbo_mtime);
1871         __swab64s(&b->mbo_atime);
1872         __swab64s(&b->mbo_ctime);
1873         __swab64s(&b->mbo_blocks);
1874         __swab64s(&b->mbo_ioepoch);
1875         __swab64s(&b->mbo_t_state);
1876         __swab32s(&b->mbo_fsuid);
1877         __swab32s(&b->mbo_fsgid);
1878         __swab32s(&b->mbo_capability);
1879         __swab32s(&b->mbo_mode);
1880         __swab32s(&b->mbo_uid);
1881         __swab32s(&b->mbo_gid);
1882         __swab32s(&b->mbo_flags);
1883         __swab32s(&b->mbo_rdev);
1884         __swab32s(&b->mbo_nlink);
1885         CLASSERT(offsetof(typeof(*b), mbo_unused2) != 0);
1886         __swab32s(&b->mbo_suppgid);
1887         __swab32s(&b->mbo_eadatasize);
1888         __swab32s(&b->mbo_aclsize);
1889         __swab32s(&b->mbo_max_mdsize);
1890         __swab32s(&b->mbo_max_cookiesize);
1891         __swab32s(&b->mbo_uid_h);
1892         __swab32s(&b->mbo_gid_h);
1893         CLASSERT(offsetof(typeof(*b), mbo_padding_5) != 0);
1894 }
1895 EXPORT_SYMBOL(lustre_swab_mdt_body);
1896
1897 void lustre_swab_mdt_ioepoch (struct mdt_ioepoch *b)
1898 {
1899         /* handle is opaque */
1900          __swab64s (&b->ioepoch);
1901          __swab32s (&b->flags);
1902          CLASSERT(offsetof(typeof(*b), padding) != 0);
1903 }
1904 EXPORT_SYMBOL(lustre_swab_mdt_ioepoch);
1905
1906 void lustre_swab_mgs_target_info(struct mgs_target_info *mti)
1907 {
1908         int i;
1909         __swab32s(&mti->mti_lustre_ver);
1910         __swab32s(&mti->mti_stripe_index);
1911         __swab32s(&mti->mti_config_ver);
1912         __swab32s(&mti->mti_flags);
1913         __swab32s(&mti->mti_instance);
1914         __swab32s(&mti->mti_nid_count);
1915         CLASSERT(sizeof(lnet_nid_t) == sizeof(__u64));
1916         for (i = 0; i < MTI_NIDS_MAX; i++)
1917                 __swab64s(&mti->mti_nids[i]);
1918 }
1919 EXPORT_SYMBOL(lustre_swab_mgs_target_info);
1920
1921 void lustre_swab_mgs_nidtbl_entry(struct mgs_nidtbl_entry *entry)
1922 {
1923         __u8 i;
1924
1925         __swab64s(&entry->mne_version);
1926         __swab32s(&entry->mne_instance);
1927         __swab32s(&entry->mne_index);
1928         __swab32s(&entry->mne_length);
1929
1930         /* mne_nid_(count|type) must be one byte size because we're gonna
1931          * access it w/o swapping. */
1932         CLASSERT(sizeof(entry->mne_nid_count) == sizeof(__u8));
1933         CLASSERT(sizeof(entry->mne_nid_type) == sizeof(__u8));
1934
1935         /* remove this assertion if ipv6 is supported. */
1936         LASSERT(entry->mne_nid_type == 0);
1937         for (i = 0; i < entry->mne_nid_count; i++) {
1938                 CLASSERT(sizeof(lnet_nid_t) == sizeof(__u64));
1939                 __swab64s(&entry->u.nids[i]);
1940         }
1941 }
1942 EXPORT_SYMBOL(lustre_swab_mgs_nidtbl_entry);
1943
1944 void lustre_swab_mgs_config_body(struct mgs_config_body *body)
1945 {
1946         __swab64s(&body->mcb_offset);
1947         __swab32s(&body->mcb_units);
1948         __swab16s(&body->mcb_type);
1949 }
1950 EXPORT_SYMBOL(lustre_swab_mgs_config_body);
1951
1952 void lustre_swab_mgs_config_res(struct mgs_config_res *body)
1953 {
1954         __swab64s(&body->mcr_offset);
1955         __swab64s(&body->mcr_size);
1956 }
1957 EXPORT_SYMBOL(lustre_swab_mgs_config_res);
1958
1959 static void lustre_swab_obd_dqinfo (struct obd_dqinfo *i)
1960 {
1961         __swab64s (&i->dqi_bgrace);
1962         __swab64s (&i->dqi_igrace);
1963         __swab32s (&i->dqi_flags);
1964         __swab32s (&i->dqi_valid);
1965 }
1966
1967 static void lustre_swab_obd_dqblk (struct obd_dqblk *b)
1968 {
1969         __swab64s (&b->dqb_ihardlimit);
1970         __swab64s (&b->dqb_isoftlimit);
1971         __swab64s (&b->dqb_curinodes);
1972         __swab64s (&b->dqb_bhardlimit);
1973         __swab64s (&b->dqb_bsoftlimit);
1974         __swab64s (&b->dqb_curspace);
1975         __swab64s (&b->dqb_btime);
1976         __swab64s (&b->dqb_itime);
1977         __swab32s (&b->dqb_valid);
1978         CLASSERT(offsetof(typeof(*b), dqb_padding) != 0);
1979 }
1980
1981 void lustre_swab_obd_quotactl (struct obd_quotactl *q)
1982 {
1983         __swab32s (&q->qc_cmd);
1984         __swab32s (&q->qc_type);
1985         __swab32s (&q->qc_id);
1986         __swab32s (&q->qc_stat);
1987         lustre_swab_obd_dqinfo (&q->qc_dqinfo);
1988         lustre_swab_obd_dqblk (&q->qc_dqblk);
1989 }
1990 EXPORT_SYMBOL(lustre_swab_obd_quotactl);
1991
1992 void lustre_swab_mdt_remote_perm (struct mdt_remote_perm *p)
1993 {
1994         __swab32s (&p->rp_uid);
1995         __swab32s (&p->rp_gid);
1996         __swab32s (&p->rp_fsuid);
1997         __swab32s (&p->rp_fsuid_h);
1998         __swab32s (&p->rp_fsgid);
1999         __swab32s (&p->rp_fsgid_h);
2000         __swab32s (&p->rp_access_perm);
2001         __swab32s (&p->rp_padding);
2002 };
2003 EXPORT_SYMBOL(lustre_swab_mdt_remote_perm);
2004
2005 void lustre_swab_fid2path(struct getinfo_fid2path *gf)
2006 {
2007         lustre_swab_lu_fid(&gf->gf_fid);
2008         __swab64s(&gf->gf_recno);
2009         __swab32s(&gf->gf_linkno);
2010         __swab32s(&gf->gf_pathlen);
2011 }
2012 EXPORT_SYMBOL(lustre_swab_fid2path);
2013
2014 void lustre_swab_fiemap_extent(struct ll_fiemap_extent *fm_extent)
2015 {
2016         __swab64s(&fm_extent->fe_logical);
2017         __swab64s(&fm_extent->fe_physical);
2018         __swab64s(&fm_extent->fe_length);
2019         __swab32s(&fm_extent->fe_flags);
2020         __swab32s(&fm_extent->fe_device);
2021 }
2022
2023 void lustre_swab_fiemap(struct ll_user_fiemap *fiemap)
2024 {
2025         __u32 i;
2026
2027         __swab64s(&fiemap->fm_start);
2028         __swab64s(&fiemap->fm_length);
2029         __swab32s(&fiemap->fm_flags);
2030         __swab32s(&fiemap->fm_mapped_extents);
2031         __swab32s(&fiemap->fm_extent_count);
2032         __swab32s(&fiemap->fm_reserved);
2033
2034         for (i = 0; i < fiemap->fm_mapped_extents; i++)
2035                 lustre_swab_fiemap_extent(&fiemap->fm_extents[i]);
2036 }
2037 EXPORT_SYMBOL(lustre_swab_fiemap);
2038
2039 void lustre_swab_idx_info(struct idx_info *ii)
2040 {
2041         __swab32s(&ii->ii_magic);
2042         __swab32s(&ii->ii_flags);
2043         __swab16s(&ii->ii_count);
2044         __swab32s(&ii->ii_attrs);
2045         lustre_swab_lu_fid(&ii->ii_fid);
2046         __swab64s(&ii->ii_version);
2047         __swab64s(&ii->ii_hash_start);
2048         __swab64s(&ii->ii_hash_end);
2049         __swab16s(&ii->ii_keysize);
2050         __swab16s(&ii->ii_recsize);
2051 }
2052
2053 void lustre_swab_lip_header(struct lu_idxpage *lip)
2054 {
2055         /* swab header */
2056         __swab32s(&lip->lip_magic);
2057         __swab16s(&lip->lip_flags);
2058         __swab16s(&lip->lip_nr);
2059 }
2060 EXPORT_SYMBOL(lustre_swab_lip_header);
2061
2062 void lustre_swab_mdt_rec_reint (struct mdt_rec_reint *rr)
2063 {
2064         __swab32s(&rr->rr_opcode);
2065         __swab32s(&rr->rr_cap);
2066         __swab32s(&rr->rr_fsuid);
2067         /* rr_fsuid_h is unused */
2068         __swab32s(&rr->rr_fsgid);
2069         /* rr_fsgid_h is unused */
2070         __swab32s(&rr->rr_suppgid1);
2071         /* rr_suppgid1_h is unused */
2072         __swab32s(&rr->rr_suppgid2);
2073         /* rr_suppgid2_h is unused */
2074         lustre_swab_lu_fid(&rr->rr_fid1);
2075         lustre_swab_lu_fid(&rr->rr_fid2);
2076         __swab64s(&rr->rr_mtime);
2077         __swab64s(&rr->rr_atime);
2078         __swab64s(&rr->rr_ctime);
2079         __swab64s(&rr->rr_size);
2080         __swab64s(&rr->rr_blocks);
2081         __swab32s(&rr->rr_bias);
2082         __swab32s(&rr->rr_mode);
2083         __swab32s(&rr->rr_flags);
2084         __swab32s(&rr->rr_flags_h);
2085         __swab32s(&rr->rr_umask);
2086
2087         CLASSERT(offsetof(typeof(*rr), rr_padding_4) != 0);
2088 };
2089 EXPORT_SYMBOL(lustre_swab_mdt_rec_reint);
2090
2091 void lustre_swab_lov_desc (struct lov_desc *ld)
2092 {
2093         __swab32s (&ld->ld_tgt_count);
2094         __swab32s (&ld->ld_active_tgt_count);
2095         __swab32s (&ld->ld_default_stripe_count);
2096         __swab32s (&ld->ld_pattern);
2097         __swab64s (&ld->ld_default_stripe_size);
2098         __swab64s (&ld->ld_default_stripe_offset);
2099         __swab32s (&ld->ld_qos_maxage);
2100         /* uuid endian insensitive */
2101 }
2102 EXPORT_SYMBOL(lustre_swab_lov_desc);
2103
2104 void lustre_swab_lmv_desc (struct lmv_desc *ld)
2105 {
2106         __swab32s (&ld->ld_tgt_count);
2107         __swab32s (&ld->ld_active_tgt_count);
2108         __swab32s (&ld->ld_default_stripe_count);
2109         __swab32s (&ld->ld_pattern);
2110         __swab64s (&ld->ld_default_hash_size);
2111         __swab32s (&ld->ld_qos_maxage);
2112         /* uuid endian insensitive */
2113 }
2114
2115 /* This structure is always in little-endian */
2116 static void lustre_swab_lmv_mds_md_v1(struct lmv_mds_md_v1 *lmm1)
2117 {
2118         int i;
2119
2120         __swab32s(&lmm1->lmv_magic);
2121         __swab32s(&lmm1->lmv_stripe_count);
2122         __swab32s(&lmm1->lmv_master_mdt_index);
2123         __swab32s(&lmm1->lmv_hash_type);
2124         __swab32s(&lmm1->lmv_layout_version);
2125         for (i = 0; i < lmm1->lmv_stripe_count; i++)
2126                 lustre_swab_lu_fid(&lmm1->lmv_stripe_fids[i]);
2127 }
2128
2129 void lustre_swab_lmv_mds_md(union lmv_mds_md *lmm)
2130 {
2131         switch (lmm->lmv_magic) {
2132         case LMV_MAGIC_V1:
2133                 lustre_swab_lmv_mds_md_v1(&lmm->lmv_md_v1);
2134                 break;
2135         default:
2136                 break;
2137         }
2138 }
2139 EXPORT_SYMBOL(lustre_swab_lmv_mds_md);
2140
2141 void lustre_swab_lmv_user_md(struct lmv_user_md *lum)
2142 {
2143         __swab32s(&lum->lum_magic);
2144         __swab32s(&lum->lum_stripe_count);
2145         __swab32s(&lum->lum_stripe_offset);
2146         __swab32s(&lum->lum_hash_type);
2147         __swab32s(&lum->lum_type);
2148         CLASSERT(offsetof(typeof(*lum), lum_padding1) != 0);
2149 }
2150 EXPORT_SYMBOL(lustre_swab_lmv_user_md);
2151
2152 static void print_lum (struct lov_user_md *lum)
2153 {
2154         CDEBUG(D_OTHER, "lov_user_md %p:\n", lum);
2155         CDEBUG(D_OTHER, "\tlmm_magic: %#x\n", lum->lmm_magic);
2156         CDEBUG(D_OTHER, "\tlmm_pattern: %#x\n", lum->lmm_pattern);
2157         CDEBUG(D_OTHER, "\tlmm_object_id: "LPU64"\n", lmm_oi_id(&lum->lmm_oi));
2158         CDEBUG(D_OTHER, "\tlmm_object_gr: "LPU64"\n", lmm_oi_seq(&lum->lmm_oi));
2159         CDEBUG(D_OTHER, "\tlmm_stripe_size: %#x\n", lum->lmm_stripe_size);
2160         CDEBUG(D_OTHER, "\tlmm_stripe_count: %#x\n", lum->lmm_stripe_count);
2161         CDEBUG(D_OTHER, "\tlmm_stripe_offset/lmm_layout_gen: %#x\n",
2162                         lum->lmm_stripe_offset);
2163 }
2164
2165 static void lustre_swab_lmm_oi(struct ost_id *oi)
2166 {
2167         __swab64s(&oi->oi.oi_id);
2168         __swab64s(&oi->oi.oi_seq);
2169 }
2170
2171 static void lustre_swab_lov_user_md_common(struct lov_user_md_v1 *lum)
2172 {
2173         ENTRY;
2174         __swab32s(&lum->lmm_magic);
2175         __swab32s(&lum->lmm_pattern);
2176         lustre_swab_lmm_oi(&lum->lmm_oi);
2177         __swab32s(&lum->lmm_stripe_size);
2178         __swab16s(&lum->lmm_stripe_count);
2179         __swab16s(&lum->lmm_stripe_offset);
2180         print_lum(lum);
2181         EXIT;
2182 }
2183
2184 void lustre_swab_lov_user_md_v1(struct lov_user_md_v1 *lum)
2185 {
2186         ENTRY;
2187         CDEBUG(D_IOCTL, "swabbing lov_user_md v1\n");
2188         lustre_swab_lov_user_md_common(lum);
2189         EXIT;
2190 }
2191 EXPORT_SYMBOL(lustre_swab_lov_user_md_v1);
2192
2193 void lustre_swab_lov_user_md_v3(struct lov_user_md_v3 *lum)
2194 {
2195         ENTRY;
2196         CDEBUG(D_IOCTL, "swabbing lov_user_md v3\n");
2197         lustre_swab_lov_user_md_common((struct lov_user_md_v1 *)lum);
2198         /* lmm_pool_name nothing to do with char */
2199         EXIT;
2200 }
2201 EXPORT_SYMBOL(lustre_swab_lov_user_md_v3);
2202
2203 void lustre_swab_lov_mds_md(struct lov_mds_md *lmm)
2204 {
2205         ENTRY;
2206         CDEBUG(D_IOCTL, "swabbing lov_mds_md\n");
2207         __swab32s(&lmm->lmm_magic);
2208         __swab32s(&lmm->lmm_pattern);
2209         lustre_swab_lmm_oi(&lmm->lmm_oi);
2210         __swab32s(&lmm->lmm_stripe_size);
2211         __swab16s(&lmm->lmm_stripe_count);
2212         __swab16s(&lmm->lmm_layout_gen);
2213         EXIT;
2214 }
2215 EXPORT_SYMBOL(lustre_swab_lov_mds_md);
2216
2217 void lustre_swab_lov_user_md_objects(struct lov_user_ost_data *lod,
2218                                      int stripe_count)
2219 {
2220         int i;
2221         ENTRY;
2222         for (i = 0; i < stripe_count; i++) {
2223                 lustre_swab_ost_id(&(lod[i].l_ost_oi));
2224                 __swab32s(&(lod[i].l_ost_gen));
2225                 __swab32s(&(lod[i].l_ost_idx));
2226         }
2227         EXIT;
2228 }
2229 EXPORT_SYMBOL(lustre_swab_lov_user_md_objects);
2230
2231 void lustre_swab_ldlm_res_id (struct ldlm_res_id *id)
2232 {
2233         int  i;
2234
2235         for (i = 0; i < RES_NAME_SIZE; i++)
2236                 __swab64s (&id->name[i]);
2237 }
2238 EXPORT_SYMBOL(lustre_swab_ldlm_res_id);
2239
2240 void lustre_swab_ldlm_policy_data (ldlm_wire_policy_data_t *d)
2241 {
2242         /* the lock data is a union and the first two fields are always an
2243          * extent so it's ok to process an LDLM_EXTENT and LDLM_FLOCK lock
2244          * data the same way. */
2245         __swab64s(&d->l_extent.start);
2246         __swab64s(&d->l_extent.end);
2247         __swab64s(&d->l_extent.gid);
2248         __swab64s(&d->l_flock.lfw_owner);
2249         __swab32s(&d->l_flock.lfw_pid);
2250 }
2251 EXPORT_SYMBOL(lustre_swab_ldlm_policy_data);
2252
2253 void lustre_swab_ldlm_intent (struct ldlm_intent *i)
2254 {
2255         __swab64s (&i->opc);
2256 }
2257 EXPORT_SYMBOL(lustre_swab_ldlm_intent);
2258
2259 void lustre_swab_ldlm_resource_desc (struct ldlm_resource_desc *r)
2260 {
2261         __swab32s (&r->lr_type);
2262         CLASSERT(offsetof(typeof(*r), lr_padding) != 0);
2263         lustre_swab_ldlm_res_id (&r->lr_name);
2264 }
2265 EXPORT_SYMBOL(lustre_swab_ldlm_resource_desc);
2266
2267 void lustre_swab_ldlm_lock_desc (struct ldlm_lock_desc *l)
2268 {
2269         lustre_swab_ldlm_resource_desc (&l->l_resource);
2270         __swab32s (&l->l_req_mode);
2271         __swab32s (&l->l_granted_mode);
2272         lustre_swab_ldlm_policy_data (&l->l_policy_data);
2273 }
2274 EXPORT_SYMBOL(lustre_swab_ldlm_lock_desc);
2275
2276 void lustre_swab_ldlm_request (struct ldlm_request *rq)
2277 {
2278         __swab32s (&rq->lock_flags);
2279         lustre_swab_ldlm_lock_desc (&rq->lock_desc);
2280         __swab32s (&rq->lock_count);
2281         /* lock_handle[] opaque */
2282 }
2283 EXPORT_SYMBOL(lustre_swab_ldlm_request);
2284
2285 void lustre_swab_ldlm_reply (struct ldlm_reply *r)
2286 {
2287         __swab32s (&r->lock_flags);
2288         CLASSERT(offsetof(typeof(*r), lock_padding) != 0);
2289         lustre_swab_ldlm_lock_desc (&r->lock_desc);
2290         /* lock_handle opaque */
2291         __swab64s (&r->lock_policy_res1);
2292         __swab64s (&r->lock_policy_res2);
2293 }
2294 EXPORT_SYMBOL(lustre_swab_ldlm_reply);
2295
2296 void lustre_swab_quota_body(struct quota_body *b)
2297 {
2298         lustre_swab_lu_fid(&b->qb_fid);
2299         lustre_swab_lu_fid((struct lu_fid *)&b->qb_id);
2300         __swab32s(&b->qb_flags);
2301         __swab64s(&b->qb_count);
2302         __swab64s(&b->qb_usage);
2303         __swab64s(&b->qb_slv_ver);
2304 }
2305
2306 /* Dump functions */
2307 void dump_ioo(struct obd_ioobj *ioo)
2308 {
2309         CDEBUG(D_RPCTRACE,
2310                "obd_ioobj: ioo_oid="DOSTID", ioo_max_brw=%#x, "
2311                "ioo_bufct=%d\n", POSTID(&ioo->ioo_oid), ioo->ioo_max_brw,
2312                ioo->ioo_bufcnt);
2313 }
2314 EXPORT_SYMBOL(dump_ioo);
2315
2316 void dump_rniobuf(struct niobuf_remote *nb)
2317 {
2318         CDEBUG(D_RPCTRACE, "niobuf_remote: offset="LPU64", len=%d, flags=%x\n",
2319                nb->rnb_offset, nb->rnb_len, nb->rnb_flags);
2320 }
2321 EXPORT_SYMBOL(dump_rniobuf);
2322
2323 void dump_obdo(struct obdo *oa)
2324 {
2325         __u32 valid = oa->o_valid;
2326
2327         CDEBUG(D_RPCTRACE, "obdo: o_valid = %08x\n", valid);
2328         if (valid & OBD_MD_FLID)
2329                 CDEBUG(D_RPCTRACE, "obdo: id = "DOSTID"\n", POSTID(&oa->o_oi));
2330         if (valid & OBD_MD_FLFID)
2331                 CDEBUG(D_RPCTRACE, "obdo: o_parent_seq = "LPX64"\n",
2332                        oa->o_parent_seq);
2333         if (valid & OBD_MD_FLSIZE)
2334                 CDEBUG(D_RPCTRACE, "obdo: o_size = "LPD64"\n", oa->o_size);
2335         if (valid & OBD_MD_FLMTIME)
2336                 CDEBUG(D_RPCTRACE, "obdo: o_mtime = "LPD64"\n", oa->o_mtime);
2337         if (valid & OBD_MD_FLATIME)
2338                 CDEBUG(D_RPCTRACE, "obdo: o_atime = "LPD64"\n", oa->o_atime);
2339         if (valid & OBD_MD_FLCTIME)
2340                 CDEBUG(D_RPCTRACE, "obdo: o_ctime = "LPD64"\n", oa->o_ctime);
2341         if (valid & OBD_MD_FLBLOCKS)   /* allocation of space */
2342                 CDEBUG(D_RPCTRACE, "obdo: o_blocks = "LPD64"\n", oa->o_blocks);
2343         if (valid & OBD_MD_FLGRANT)
2344                 CDEBUG(D_RPCTRACE, "obdo: o_grant = "LPD64"\n", oa->o_grant);
2345         if (valid & OBD_MD_FLBLKSZ)
2346                 CDEBUG(D_RPCTRACE, "obdo: o_blksize = %d\n", oa->o_blksize);
2347         if (valid & (OBD_MD_FLTYPE | OBD_MD_FLMODE))
2348                 CDEBUG(D_RPCTRACE, "obdo: o_mode = %o\n",
2349                        oa->o_mode & ((valid & OBD_MD_FLTYPE ?  S_IFMT : 0) |
2350                                      (valid & OBD_MD_FLMODE ? ~S_IFMT : 0)));
2351         if (valid & OBD_MD_FLUID)
2352                 CDEBUG(D_RPCTRACE, "obdo: o_uid = %u\n", oa->o_uid);
2353         if (valid & OBD_MD_FLUID)
2354                 CDEBUG(D_RPCTRACE, "obdo: o_uid_h = %u\n", oa->o_uid_h);
2355         if (valid & OBD_MD_FLGID)
2356                 CDEBUG(D_RPCTRACE, "obdo: o_gid = %u\n", oa->o_gid);
2357         if (valid & OBD_MD_FLGID)
2358                 CDEBUG(D_RPCTRACE, "obdo: o_gid_h = %u\n", oa->o_gid_h);
2359         if (valid & OBD_MD_FLFLAGS)
2360                 CDEBUG(D_RPCTRACE, "obdo: o_flags = %x\n", oa->o_flags);
2361         if (valid & OBD_MD_FLNLINK)
2362                 CDEBUG(D_RPCTRACE, "obdo: o_nlink = %u\n", oa->o_nlink);
2363         else if (valid & OBD_MD_FLCKSUM)
2364                 CDEBUG(D_RPCTRACE, "obdo: o_checksum (o_nlink) = %u\n",
2365                        oa->o_nlink);
2366         if (valid & OBD_MD_FLGENER)
2367                 CDEBUG(D_RPCTRACE, "obdo: o_parent_oid = %x\n",
2368                        oa->o_parent_oid);
2369         if (valid & OBD_MD_FLEPOCH)
2370                 CDEBUG(D_RPCTRACE, "obdo: o_ioepoch = "LPD64"\n",
2371                        oa->o_ioepoch);
2372         if (valid & OBD_MD_FLFID) {
2373                 CDEBUG(D_RPCTRACE, "obdo: o_stripe_idx = %u\n",
2374                        oa->o_stripe_idx);
2375                 CDEBUG(D_RPCTRACE, "obdo: o_parent_ver = %x\n",
2376                        oa->o_parent_ver);
2377         }
2378         if (valid & OBD_MD_FLHANDLE)
2379                 CDEBUG(D_RPCTRACE, "obdo: o_handle = "LPD64"\n",
2380                        oa->o_handle.cookie);
2381         if (valid & OBD_MD_FLCOOKIE)
2382                 CDEBUG(D_RPCTRACE, "obdo: o_lcookie = "
2383                        "(llog_cookie dumping not yet implemented)\n");
2384 }
2385 EXPORT_SYMBOL(dump_obdo);
2386
2387 void dump_ost_body(struct ost_body *ob)
2388 {
2389         dump_obdo(&ob->oa);
2390 }
2391 EXPORT_SYMBOL(dump_ost_body);
2392
2393 void dump_rcs(__u32 *rc)
2394 {
2395         CDEBUG(D_RPCTRACE, "rmf_rcs: %d\n", *rc);
2396 }
2397 EXPORT_SYMBOL(dump_rcs);
2398
2399 static inline int req_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2400 {
2401         LASSERT(req->rq_reqmsg);
2402
2403         switch (req->rq_reqmsg->lm_magic) {
2404         case LUSTRE_MSG_MAGIC_V2:
2405                 return lustre_req_swabbed(req, MSG_PTLRPC_BODY_OFF);
2406         default:
2407                 CERROR("bad lustre msg magic: %#08X\n",
2408                        req->rq_reqmsg->lm_magic);
2409         }
2410         return 0;
2411 }
2412
2413 static inline int rep_ptlrpc_body_swabbed(struct ptlrpc_request *req)
2414 {
2415         LASSERT(req->rq_repmsg);
2416
2417         switch (req->rq_repmsg->lm_magic) {
2418         case LUSTRE_MSG_MAGIC_V2:
2419                 return lustre_rep_swabbed(req, MSG_PTLRPC_BODY_OFF);
2420         default:
2421                 /* uninitialized yet */
2422                 return 0;
2423         }
2424 }
2425
2426 void _debug_req(struct ptlrpc_request *req,
2427                 struct libcfs_debug_msg_data *msgdata,
2428                 const char *fmt, ... )
2429 {
2430         int req_ok = req->rq_reqmsg != NULL;
2431         int rep_ok = req->rq_repmsg != NULL;
2432         lnet_nid_t nid = LNET_NID_ANY;
2433         va_list args;
2434
2435         if (ptlrpc_req_need_swab(req)) {
2436                 req_ok = req_ok && req_ptlrpc_body_swabbed(req);
2437                 rep_ok = rep_ok && rep_ptlrpc_body_swabbed(req);
2438         }
2439
2440         if (req->rq_import && req->rq_import->imp_connection)
2441                 nid = req->rq_import->imp_connection->c_peer.nid;
2442         else if (req->rq_export && req->rq_export->exp_connection)
2443                 nid = req->rq_export->exp_connection->c_peer.nid;
2444
2445         va_start(args, fmt);
2446         libcfs_debug_vmsg2(msgdata, fmt, args,
2447                            " req@%p x"LPU64"/t"LPD64"("LPD64") o%d->%s@%s:%d/%d"
2448                            " lens %d/%d e %d to %d dl "CFS_TIME_T" ref %d "
2449                            "fl "REQ_FLAGS_FMT"/%x/%x rc %d/%d\n",
2450                            req, req->rq_xid, req->rq_transno,
2451                            req_ok ? lustre_msg_get_transno(req->rq_reqmsg) : 0,
2452                            req_ok ? lustre_msg_get_opc(req->rq_reqmsg) : -1,
2453                            req->rq_import ?
2454                                 req->rq_import->imp_obd->obd_name :
2455                                 req->rq_export ?
2456                                         req->rq_export->exp_client_uuid.uuid :
2457                                         "<?>",
2458                            libcfs_nid2str(nid),
2459                            req->rq_request_portal, req->rq_reply_portal,
2460                            req->rq_reqlen, req->rq_replen,
2461                            req->rq_early_count, req->rq_timedout,
2462                            req->rq_deadline,
2463                            atomic_read(&req->rq_refcount),
2464                            DEBUG_REQ_FLAGS(req),
2465                            req_ok ? lustre_msg_get_flags(req->rq_reqmsg) : -1,
2466                            rep_ok ? lustre_msg_get_flags(req->rq_repmsg) : -1,
2467                            req->rq_status,
2468                            rep_ok ? lustre_msg_get_status(req->rq_repmsg) : -1);
2469         va_end(args);
2470 }
2471 EXPORT_SYMBOL(_debug_req);
2472
2473 void lustre_swab_lustre_capa(struct lustre_capa *c)
2474 {
2475         lustre_swab_lu_fid(&c->lc_fid);
2476         __swab64s (&c->lc_opc);
2477         __swab64s (&c->lc_uid);
2478         __swab64s (&c->lc_gid);
2479         __swab32s (&c->lc_flags);
2480         __swab32s (&c->lc_keyid);
2481         __swab32s (&c->lc_timeout);
2482         __swab32s (&c->lc_expiry);
2483 }
2484 EXPORT_SYMBOL(lustre_swab_lustre_capa);
2485
2486 void lustre_swab_lustre_capa_key(struct lustre_capa_key *k)
2487 {
2488         __swab64s (&k->lk_seq);
2489         __swab32s (&k->lk_keyid);
2490         CLASSERT(offsetof(typeof(*k), lk_padding) != 0);
2491 }
2492 EXPORT_SYMBOL(lustre_swab_lustre_capa_key);
2493
2494 void lustre_swab_hsm_user_state(struct hsm_user_state *state)
2495 {
2496         __swab32s(&state->hus_states);
2497         __swab32s(&state->hus_archive_id);
2498 }
2499 EXPORT_SYMBOL(lustre_swab_hsm_user_state);
2500
2501 void lustre_swab_hsm_state_set(struct hsm_state_set *hss)
2502 {
2503         __swab32s(&hss->hss_valid);
2504         __swab64s(&hss->hss_setmask);
2505         __swab64s(&hss->hss_clearmask);
2506         __swab32s(&hss->hss_archive_id);
2507 }
2508 EXPORT_SYMBOL(lustre_swab_hsm_state_set);
2509
2510 void lustre_swab_hsm_extent(struct hsm_extent *extent)
2511 {
2512         __swab64s(&extent->offset);
2513         __swab64s(&extent->length);
2514 }
2515
2516 void lustre_swab_hsm_current_action(struct hsm_current_action *action)
2517 {
2518         __swab32s(&action->hca_state);
2519         __swab32s(&action->hca_action);
2520         lustre_swab_hsm_extent(&action->hca_location);
2521 }
2522 EXPORT_SYMBOL(lustre_swab_hsm_current_action);
2523
2524 void lustre_swab_hsm_user_item(struct hsm_user_item *hui)
2525 {
2526         lustre_swab_lu_fid(&hui->hui_fid);
2527         lustre_swab_hsm_extent(&hui->hui_extent);
2528 }
2529 EXPORT_SYMBOL(lustre_swab_hsm_user_item);
2530
2531 void lustre_swab_layout_intent(struct layout_intent *li)
2532 {
2533         __swab32s(&li->li_opc);
2534         __swab32s(&li->li_flags);
2535         __swab64s(&li->li_start);
2536         __swab64s(&li->li_end);
2537 }
2538 EXPORT_SYMBOL(lustre_swab_layout_intent);
2539
2540 void lustre_swab_hsm_progress_kernel(struct hsm_progress_kernel *hpk)
2541 {
2542         lustre_swab_lu_fid(&hpk->hpk_fid);
2543         __swab64s(&hpk->hpk_cookie);
2544         __swab64s(&hpk->hpk_extent.offset);
2545         __swab64s(&hpk->hpk_extent.length);
2546         __swab16s(&hpk->hpk_flags);
2547         __swab16s(&hpk->hpk_errval);
2548 }
2549 EXPORT_SYMBOL(lustre_swab_hsm_progress_kernel);
2550
2551 void lustre_swab_hsm_request(struct hsm_request *hr)
2552 {
2553         __swab32s(&hr->hr_action);
2554         __swab32s(&hr->hr_archive_id);
2555         __swab64s(&hr->hr_flags);
2556         __swab32s(&hr->hr_itemcount);
2557         __swab32s(&hr->hr_data_len);
2558 }
2559 EXPORT_SYMBOL(lustre_swab_hsm_request);
2560
2561 void lustre_swab_object_update(struct object_update *ou)
2562 {
2563         struct object_update_param *param;
2564         size_t  i;
2565
2566         __swab16s(&ou->ou_type);
2567         __swab16s(&ou->ou_params_count);
2568         __swab32s(&ou->ou_master_index);
2569         __swab32s(&ou->ou_flags);
2570         __swab32s(&ou->ou_padding1);
2571         __swab64s(&ou->ou_batchid);
2572         lustre_swab_lu_fid(&ou->ou_fid);
2573         param = &ou->ou_params[0];
2574         for (i = 0; i < ou->ou_params_count; i++) {
2575                 __swab16s(&param->oup_len);
2576                 __swab16s(&param->oup_padding);
2577                 __swab32s(&param->oup_padding2);
2578                 param = (struct object_update_param *)((char *)param +
2579                          object_update_param_size(param));
2580         }
2581 }
2582 EXPORT_SYMBOL(lustre_swab_object_update);
2583
2584 void lustre_swab_object_update_request(struct object_update_request *our)
2585 {
2586         size_t i;
2587         __swab32s(&our->ourq_magic);
2588         __swab16s(&our->ourq_count);
2589         __swab16s(&our->ourq_padding);
2590         for (i = 0; i < our->ourq_count; i++) {
2591                 struct object_update *ou;
2592
2593                 ou = object_update_request_get(our, i, NULL);
2594                 if (ou == NULL)
2595                         return;
2596                 lustre_swab_object_update(ou);
2597         }
2598 }
2599 EXPORT_SYMBOL(lustre_swab_object_update_request);
2600
2601 void lustre_swab_object_update_result(struct object_update_result *our)
2602 {
2603         __swab32s(&our->our_rc);
2604         __swab16s(&our->our_datalen);
2605         __swab16s(&our->our_padding);
2606 }
2607 EXPORT_SYMBOL(lustre_swab_object_update_result);
2608
2609 void lustre_swab_object_update_reply(struct object_update_reply *our)
2610 {
2611         size_t i;
2612
2613         __swab32s(&our->ourp_magic);
2614         __swab16s(&our->ourp_count);
2615         __swab16s(&our->ourp_padding);
2616         for (i = 0; i < our->ourp_count; i++) {
2617                 struct object_update_result *ourp;
2618
2619                 __swab16s(&our->ourp_lens[i]);
2620                 ourp = object_update_result_get(our, i, NULL);
2621                 if (ourp == NULL)
2622                         return;
2623                 lustre_swab_object_update_result(ourp);
2624         }
2625 }
2626 EXPORT_SYMBOL(lustre_swab_object_update_reply);
2627
2628 void lustre_swab_swap_layouts(struct mdc_swap_layouts *msl)
2629 {
2630         __swab64s(&msl->msl_flags);
2631 }
2632 EXPORT_SYMBOL(lustre_swab_swap_layouts);
2633
2634 void lustre_swab_close_data(struct close_data *cd)
2635 {
2636         lustre_swab_lu_fid(&cd->cd_fid);
2637         __swab64s(&cd->cd_data_version);
2638 }
2639 EXPORT_SYMBOL(lustre_swab_close_data);
2640
2641 void lustre_swab_lfsck_request(struct lfsck_request *lr)
2642 {
2643         __swab32s(&lr->lr_event);
2644         __swab32s(&lr->lr_index);
2645         __swab32s(&lr->lr_flags);
2646         __swab32s(&lr->lr_valid);
2647         __swab32s(&lr->lr_speed);
2648         __swab16s(&lr->lr_version);
2649         __swab16s(&lr->lr_active);
2650         __swab16s(&lr->lr_param);
2651         __swab16s(&lr->lr_async_windows);
2652         __swab32s(&lr->lr_flags);
2653         lustre_swab_lu_fid(&lr->lr_fid);
2654         lustre_swab_lu_fid(&lr->lr_fid2);
2655         lustre_swab_lu_fid(&lr->lr_fid3);
2656         CLASSERT(offsetof(typeof(*lr), lr_padding_2) != 0);
2657         CLASSERT(offsetof(typeof(*lr), lr_padding_3) != 0);
2658 }
2659 EXPORT_SYMBOL(lustre_swab_lfsck_request);
2660
2661 void lustre_swab_lfsck_reply(struct lfsck_reply *lr)
2662 {
2663         __swab32s(&lr->lr_status);
2664         CLASSERT(offsetof(typeof(*lr), lr_padding_1) != 0);
2665         CLASSERT(offsetof(typeof(*lr), lr_padding_2) != 0);
2666 }
2667 EXPORT_SYMBOL(lustre_swab_lfsck_reply);
2668
2669 void lustre_swab_orphan_ent(struct lu_orphan_ent *ent)
2670 {
2671         lustre_swab_lu_fid(&ent->loe_key);
2672         lustre_swab_lu_fid(&ent->loe_rec.lor_fid);
2673         __swab32s(&ent->loe_rec.lor_uid);
2674         __swab32s(&ent->loe_rec.lor_gid);
2675 }
2676 EXPORT_SYMBOL(lustre_swab_orphan_ent);